Summary Information
Precipitation Chemistry Data For the Sevilleta National Wildlife Refuge, New Mexico (1989-present)
Creator:
Individual: Douglas I. Moore
Physical Address:
Delivery Address: Sevilleta LTER, 167 Castetter Hall, University of New Mexico
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Email: dmoore@sevilleta.unm.edu
Metadata Provider:
Individual: Information Manager Sevilleta LTER
Physical Address:
Delivery Address: 1 University of New Mexico
City: Albuquerque
Postal Code: 87131
Phone: US
Phone: (505) 277-2109
Phone: (505) 277.5355
Email: data-use@sevilleta.unm.edu
Associated Party:
Individual: Douglas I. Moore
Physical Address:
Delivery Address: Sevilleta LTER, 167 Castetter Hall, University of New Mexico
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Email: dmoore@sevilleta.unm.edu
Role: data manager
Associated Party:
Individual: Douglas I. Moore
Physical Address:
Delivery Address: Sevilleta LTER, 167 Castetter Hall, University of New Mexico
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Email: dmoore@sevilleta.unm.edu
Role: field crew
Associated Party:
Individual: John Dewitt
Physical Address:
Phone: US
Role: field crew
Associated Party:
Individual: Douglas I. Moore
Physical Address:
Delivery Address: Sevilleta LTER, 167 Castetter Hall, University of New Mexico
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Email: dmoore@sevilleta.unm.edu
Role: lab crew
Associated Party:
Individual: John Craig
Physical Address:
Delivery Address: Department of Biology, MSC03 2020, University of New Mexico
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Email: jcraig@sevilleta.unm.edu
Role: lab crew
Publication Date: 2010-09-15
Language: English
Abstract:
This data set includes precipitation chemisty from 20 funnel collectors on the Sevilleta National Wildlife Refuge (NWR). Variables measured include volume, NO3-N, NH4-N, SO4, Cl, Na, K, Ca, Mg, and PO4. The sample interval depends on the frequency of significant precipitations events. Field collection of precipitation chemistry samples occurred as soon after a significant precipitation event as possible (usually within a week after the event). In some cases collection of precipitation chemistry samples occurred more often than meteorlogical station samples (summer, fall), and sometimes less often (winter, spring). Precipitation chemistry samples were collected only when there was enough sample to allow for complete chemical analysis, (usually greater than 100mls). After 1995 all samples continued to be collected for volume but only an a partial set of the samples continued to be analyzed for inorganic nutrients.
Keywords:
Keyword: inorganic nutrients
Keyword Thesaurus: Core Areas
Keywords:
Keyword: biogeochemistry
Keyword: water chemistry
Keyword: precipitation
Keyword: precipitation
Keyword: bulk deposition
Keyword: nitrogen deposition
Keyword: precipitation
Keyword: precipitation
Keyword: ions
Keyword: deserts
Keyword: grasslands
Keyword Thesaurus: LTER Controlled Vocabulary
Additional Information:
Additional Information on the Data Collection Period Data collected four times per year (usually January, April, July and October).Sampled one week per season, four seasons per year. Samples were generally collected monthly and usually on the last day of the month or on the first day of the subsequent month. The exceptions are 1) when there is little or no precipitation during that month in which case the collection is merely postponed until the following month or 2) the opposite extreme when there is heavy rain during the month so that it bcomes necessay to collect the samples before the collection bottles overflow. Where the Data were Collected A network of 20 funnel collectors and 2 wet/dry chemistry collectors was set out to monitor precipitation chemistry. There are 10 funnel collectors located on the west side and 10 on the east side of the Sevilleta NWR. Table 1. gives coordinates and description of the location of these collectors. In Table 1. P = ppt, E = east side, W = west side and the number = collector number. Figure 1. shows the individual collector site locations. A bulk chemistry funnel collector was placed at each of the 6 meteorlogical stations noted in the meteorlogical data archive files, with the other 14 distributed over the entire range of the Sevilleta. After 1995 only 6 of the funnels continued to be processed completely along with the wet and dry samples from each of the wet/dry collectors. In Table 1 an *denotes those samples continuing to be fully analyzed. New funnels were added to the east side of the network beginning in 1998. The locations and installation dates of these funnels have now been added to the table. In addition PE4 was moved about 2 km west in conjunction with the installation of a new Met station and analyses were begun again in Jan 1999. Analyses were restarted at PE2 in Nov, 2001 as well. Some of the west side funnels have been totally discontinued. These include. PW3, PW5, PW6, PW9 and PW10 The location of all funnels can be seen at:http://sevilleta.unm.edu/research/local/nutrient/precip_chem/maps/newfun... -----------------------------------------------------------------------------Table 1. Description and coordinates of precipitation chemistry collectors.Funnel No.        Location             Met.sta.      Lat.            Long.              Elev.(meters)   Date Installed --------------------------------------------------------------------------------------------- PE1      NW corner                        34.4063  -106.7874     1446               011789 PE2*    Black Well                        34.3971  -106.6609     1547               011789 PE3*    Deep Well         Met40       34.3601  -106.6891    1571               011789 PE4*    Five Points                       34.3301  -106.7061     1596               011789 PE4     New Five Points   Met49      34.3351  -106.7287     1611               010199 PE5     Gibbs Farm                       34.2699   -106.7516    1544               011789 PE6*   Southern Gate    Met41       34.2186  -106.7950    1515                011789 PE7     Montosa Road                   34.2589   -106.6664    1683               011789 PE8     Nunn Flats                        34.3702   -106.6172    1635               011789 PE9*   Cerro Montosa    Met42      34.3682    -106.5347   1944               011789 PE10   Sepultura Canyon              34.3024    -106.6203   1803               050389 PE13* Savanna            Met48      34.4145    -106.5229    1794               010199 PE14* Blue Grama        Met50      34.3350    -106.6313    1669              113001 PE15* SE McKenzie Flats              34.2800    -106.6723    1696              113001 PW1 NE Corner                           34.4058     -106.8792   1448              020289 PW2 Bronco Well          Met45      34.4068     -106.9328   1524              020289 PW3 222 Well                            34.4184      -107.0316   1800             020289 PW4* Watersheds        Met43      34.3987     -107.0376   1748              020289 PW5 Mid North                           34.3684      -106.9546   1560              020289 PW6 La Cueva                           34.3464      -107.1415   1577             020289 PW7* Headquarters                    34.3512     -106.8815   1440              020289 PW8* Rio Salado         Met44      34.2952     -106.9241   1485              020289 PW9 West Mesa                         34.2617     -107.0650   1734              033089 PW10 South Central                   34.2537      -106.9881   1596              050389 * Funnels being collected as of Jan 1 2009 Wet/Dry Buckets ------------------ As with the funnels, the P designates a precipitation sample, the E and W designate the east or west side of the refuge. 11 is the wet fraction while 12 is dry fraction solublized in 250 ml of deionized water. FunnelNo.       Location                Met.sta.    Lat.              Long.          Elev.(meters)   Date Installed -------------------------------------------------------------------------------------------------- PE11*  Deep Well         Met40      34.3601   -106.6891    1571              061990 PE12*  Deep Well         Met40      34.3601   -106.6891    1571              061990 PW11* Rio Salado        Met44      34.2952   -106.9241    1485              040492 PW12* Rio Salado        Met44      34.2952   -106.9241    1485              040492 In February, 2002, the Wet/Dry collector was moved from Rio Salado to the Cerro Montoso site. The wet and dry samples being collected at this site were given the designation PE19 and PE20 respectively. Coordinates are given below. PE19* Cerro Montoso    Met42      34.3682   -106.5347    1944              050202 PE20* Cerro Montoso    Met42      34.3682   -106.5347    1944              050202
Intellectual Rights:
Data Policies
This dataset is released to the public and may be freely downloaded. Please keep the designated contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement of the Sevilleta LTER. A copy of any publications using these data must be supplied to the Sevilleta LTER Information Manager.
Distribution:
Online:
URL: http://sevdeims-d.lternet.edu/data/sev-2
Coverage:
Geographic Goverage:
Geographic Description: Deep Well Meteorological Station (No. 40) is about half way between Black Butte and FivePoints. It is about 200 m west of the road.
Bounding Coordinates:
West Bounding Coordinates: -106.691
East Bounding Coordinates: -106.691
North Bounding Coordinates: 34.3592
South Bounding Coordinates: 34.3592
Bounding Altitude:
Altitude Minimum: 1600
Altitude Maximum: 1600
Altitude Units: meter
Geographic Goverage:
Geographic Description: South Gate Meteorological Station (No. 41) is located about 2 km north of the south boundary of the Sevilleta on the east side of the refuge
Bounding Coordinates:
West Bounding Coordinates: -106.795
East Bounding Coordinates: -106.795
North Bounding Coordinates: 34.2167
South Bounding Coordinates: 34.2167
Bounding Altitude:
Altitude Minimum: 1538
Altitude Maximum: 1538
Altitude Units: meter
Geographic Goverage:
Geographic Description: Cerro Montoso Meteorological Station (No. 42) is at the eastern edge of the Sevilleta in a small bowl - Montosa Draw. Cerro Montoso is just to the south and there is a lower set of hills to the north.
Bounding Coordinates:
West Bounding Coordinates: -106.535
East Bounding Coordinates: -106.535
North Bounding Coordinates: 34.3685
South Bounding Coordinates: 34.3685
Bounding Altitude:
Altitude Minimum: 1971
Altitude Maximum: 1971
Altitude Units: meter
Geographic Goverage:
Geographic Description: Savanna (also called Lower Goat Draw) Meteorological Station (No. 48) is at the north-eastern edge of the Sevilleta in lower Goat Draw. In low hills just west of the Goat Draw wash and about 1 km up the wash.
Bounding Coordinates:
West Bounding Coordinates: -106.523
East Bounding Coordinates: -106.523
North Bounding Coordinates: 34.4147
South Bounding Coordinates: 34.4147
Bounding Altitude:
Altitude Minimum: 1796
Altitude Maximum: 1796
Altitude Units: meter
Geographic Goverage:
Geographic Description: Blue Grama Meteorological Station (No. 50) is located on the eastern edge of Mckenzie Flats near base of Los Pinos Mountains. About 1 mile south of old ranch headquarters about 200 m west of road
Bounding Coordinates:
West Bounding Coordinates: -106.632
East Bounding Coordinates: -106.632
North Bounding Coordinates: 34.335
South Bounding Coordinates: 34.335
Bounding Altitude:
Altitude Minimum: 1669
Altitude Maximum: 1669
Altitude Units: meter
Geographic Goverage:
Geographic Description: Bronco Well Meteorological Station (No. 45) is located on the west side of the Sevilleta, near the north boundary of the refuge and about halfway between the Rio Grande and the western boundary of the refuge. Area is generally Colorado Plateau grassland.
Bounding Coordinates:
West Bounding Coordinates: -106.934
East Bounding Coordinates: -106.934
North Bounding Coordinates: 34.4056
South Bounding Coordinates: 34.4056
Bounding Altitude:
Altitude Minimum: 1547
Altitude Maximum: 1547
Altitude Units: meter
Geographic Goverage:
Geographic Description: Red Tank Meteorological Station (No. 43) is located on a low ridge which overlooks the confluence of 2 smallwatersheds to the west. The station is located about 100 m to the west of where the road to Red Tank ends at the diversion channel.
Bounding Coordinates:
West Bounding Coordinates: -107.037
East Bounding Coordinates: -107.037
North Bounding Coordinates: 34.3982
South Bounding Coordinates: 34.3982
Bounding Altitude:
Altitude Minimum: 1766
Altitude Maximum: 1766
Altitude Units: meter
Geographic Goverage:
Geographic Description: Rio Salado Meteorological Station (No. 44) is located about 3 km West I-25 just south of the Rio Salado. Site is accessed by taking San Acacia exit, going west and then taking the frontage road back north to the Sevilleta gate. After entering the refuge turn left after about .2 mi and take this road about 1.4 mi to a T in the road at the power lines. An earthen berm stops road travel here and the station is located about 300 m west on the blocked road.
Bounding Coordinates:
West Bounding Coordinates: -106.927
East Bounding Coordinates: -106.927
North Bounding Coordinates: 34.296
South Bounding Coordinates: 34.296
Bounding Altitude:
Altitude Minimum: 1503
Altitude Maximum: 1503
Altitude Units: meter
Temporal Coverage:
Date Range:
Begin Date:
Calendar Date: 1989-01-01
End Date:
Calendar Date: 2008-12-31
Purpose:
To quantify spatial and temporal patterns of inputs of precipitation and dissolved inorganic nutrients in this precipitation across the Sevilleta
Maintenance Information:
Description:
log file created 12/15/1998 - D.M. July 5th, 1991. File recieved from Todd Haagenstad Data set was reformatted for "rdb," and new variables were added including year, quarter, and error (see database variables) by Michelle L. Murillo. Additional information and some editing was done on the abstract, further editing is still required. December 11, 1992-Edited for 1991 and 1992 data files. Feb 11, 2000-Updated for period since 1991. Mar 8, 2005 - File updated with data from 2002-2004 D.M. doc. July 31, 2009 - Redid all 1989-2004 data and added variable mm. This is a derived value based on volume and the cross sectional area of the collector for current funnels mm=Volume/55.9 for buckets mm=volume/64. D.M. July 31, 2009 - changed all date variables to format YYYYMMDD D.M. July 31, 2009 - added new data from 2005-2008 D.M.
Contact:
Position Title: Information Manager
Organization: LTER Network Office
Physical Address:
Delivery Address: UNM Biology Department, MSC03-2020
Delivery Address: 1 University of New Mexico
City: Albuquerque
Locality: NM
Postal Code: 87131-0001
Phone: USA
Phone: 505 277-2535
Phone: 505 277-2541
Email: tech-support@lternet.edu
URL: http://www.lternet.edu
Contact:
Individual: Information Manager Sevilleta LTER
Physical Address:
Delivery Address: 1 University of New Mexico
City: Albuquerque
Postal Code: 87131
Phone: US
Phone: (505) 277-2109
Phone: (505) 277.5355
Email: data-use@sevilleta.unm.edu
Publisher:
Organization: Sevilleta Long Term Ecological Research (LTER) Project
URL: http://sev.lternet.edu
Publication Place: Sevilleta LTER
Method Step:
Description:
How the Samples were Collected The 26.67cm (10.50in) polyethylene funnels are acid washed prior to collection with a 50 deionized water rinse. For each collection, a one gallon acid washed replacement bottle is prepared containing 1ml of a 1000ppm solution of phenyl mercuric acetate (PMA). The PMA functions as a preservative. The collected sample is routed through tygon tubing between the funnel and the bottle and forms a vapor trap to prevent evaporation of the sample. A tube running from the sample bottle to a 4oz. bottle containing water, provides a second vapor trap but allows the sample bottle to breathe during precipitation collection. Funnel Precipitation Collection Samples should be collected with care being taken to not contaminate the precipitation samples. Hands are a primary source of Na contamination so do not touch any surfaces that precipitation samples have or will come in contact with. Inspect funnel setup for damage of contamination. Look inside the funnel to see if it has been contaminated by bird droppings. If so, the funnel will have to be replaced with a clean one. Unscrew the lid of bottle; put lid from replacement bottle on the sample bottle. Put new bottle on stand and replace cap. With the two tubes coming out of the lids it is necessary to slightly twist these tubes counter clockwise before starting to twist the cap on so that the tubes do not end up too twisted after screwing on the lid. One can also simply screw the bottle on to the lid. Make sure that the seal is tight so that precipitation will not evaporate out of the bottle. Wet/dry collectors A wet/dry collector has been installed at Met40 (Deep Well). The Wet/Dry collector sample will be collected after significant storm events. The bulk chemistry collector at this site (PE3) should always be collected at the same time. As with all precipitation sample collection, care must be taken to not touch any surfaces that have or will come in contact with precipitation, therefore, all buckets should be handled by the sides, bottoms or handles. Care should also be taken to avoid stirring up dust in the vicinity of the collector which may bias the dry sample collection. The procedure for collecting the wet and dry portions of this collector, is as follows: Take two acid washed buckets with loosely fitting lids (that should always be transported in plastic garbage bags), out to the collector. Also, take 1000ml wide mouth bottle and 1000ml graduated cylinder. Place lid from one of the clean buckets on the dry collection bucket. Remove the tie-down strap and remove the dry bucket from the stand. Place the clean bucket in the holder and secure it with the tie-down. Actuate the moisture sensor so that the cover moves over the dry bucket (spit works). If cover does not move, check the battery voltage and connections and replace battery if necessary. Open 1000ml bottle, remove tie-down from wet bucket, remove bucket from holder, swirl sample in bucket well and transfer up to 1000ml of it to the wide mouth bottle. Place wet and dry buckets back in plastic garbage bags for return to laboratory. Laboratory Processing When bulk field samples arrive in the laboratory; individual samples are weighed, volumes are recorded (1gram = 1ml of water) and a 60ml subsample is poured off and stored for the wet chemistry analyses. Generally, samples with less than 100ml are not collected until the 100ml volume is exceeded. In some cases, bulk field samples containing less than 100ml, must be collected (as may be the case at the end of a quarter). For these samples, 100ml of deionized water is added to the original volume, so all analyses can be completed. Identified contaminated bulk samples, are noted as such, volumes are recorded, then the samples are often discarded. The primary precipitation chemical analyses are done using the 60ml subsample. In an attempt to isolate contaminated samples that were impossible to identify as such in the field; samples are initially analyzed for nitrate, ammonium, and major cations including; sodium, potassium, calcium and magnesium. Data collected from these analyses, are then examined and compared with individual sample volumes. Ratios of specific cation concentrations within a sample are compared, then correlated with expected ratios. Samples with unusually high ratios, are determined to be contaminated. Contaminated samples are recorded as such and receive no further analyses. The remaining samples are then analyzed for chloride, and sulfate. 1st quarter: January 1 - March 30 2nd quarter: April 1 - June 30 3rd quarter: July 1 - September 30 4th quarter: October 1 - December 31 Specific analytical procedures The following text contains specific analytical descriptions and procedures used to analyze precipitation chemistry for the Sevilleta LTER. The Table below lists each analysis indicated with the appropriate analytical procedure. Analysis Procedure/Methods ------------------------------------------------------------------------- NO3-N    Technicon Auto-analyzer II; Method No. 100-70W NH4-N    Technicon Auto-analyzer II; Method No. 98-70W             (modification; phenol reagent adjusted to pH=12). SO4       Technicon Auto-analyzer II; Method No. 226-72W Cl          Technicon Auto-analyzer II; Method No. 99-70W              (modification; final concentrations adjusted to              account for PMA interference). After May 1992 analyses for NO3, SO4, Cl and PO4 were performed using a Dionex D-100 Ion ChromatographBase cations: All Major Cation analyses are completed with a Perkin Elmer 306 Atomic Absorption Spectrophotometer. The flame method is used. Na K Ca (modifications; [La] added, (1ml [La]/10ml sample)       to suppress [Ca] and [Mg] ionization interference. Sample receives(2X) dilution). Mg (modifications; [La] added, (1ml [La]/10ml sample)        to suppress [Ca] and [Mg] ionization        interference. Samples receive (2X) dilution).
Quality Control:
Description:
A measure of the quality of the data can be derived from the flag variable. These letter codes are derived from field recordings as well as results from lab analysis. Below are are list of the flags and what they denote. Capitals and small letters are equivalent Flag Meaning ------------------------------------------------------------------------------ a No obvious problems denoted in the sample c Contaminated - either observed in the field or found from lab results G Bottle overflowed so volume came from associated weather station gauge L Sample lost - either during collection or processing M Sample bottle missing in the fileld - often due to strong winds O Overflowed - bottled overflowed R Sample obtained from rinsing down funnel- for samples when no rain occurred for a long time P Funnel plugged - volume may be incorrect due to evaporation v Volume only - chemical analysis not done on samples - this was true for many of the samples after 1995
Data Table:
Entity Name: sev002_pptchem_20110712.txt
Entity Description: Data for Precipitation Chemistry study
Object Name: sev002_pptchem_20110712_0.txt
Size: 362355
Data Format:
Text Format:
Number of Header Lines: 1
Record Delimiter: \r\n
Attribute Orientation: column
Simple Delimited:
Field Delimiter: ,
Distribution:
Online:
URL: https://pasta.lternet.edu/package/data/eml/knb-lter-sev/2/329007/b0c4e1232f8149b69d99ae7306157672
Coverage:
Temporal Coverage:
Date Range:
Begin Date:
Calendar Date: 1989-01-01
End Date:
Calendar Date: 2008-01-01
Attribute List:
Attribute Name: Year
Attribute Label: Year
Attribute Definition: The year in which the data were collected.
Storage Type: date
Measurement Scale:
Datetime:
Format String: YYYY
Attribute Name: Quarter
Attribute Label: Qtr
Attribute Definition: Quarter of the year during which sample fell
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: 1
Definition: 1st quarter: January 1- March 30
Code Definition:
Code: 2
Definition: 2nd quarter: April 1- June 30
Code Definition:
Code: 3
Definition: 3rd quarter: July 1- September 30
Code Definition:
Code: 4
Definition: 4th quarter: October 1- December 31
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Collection
Attribute Label: Col
Attribute Definition: Sequential collection of the given year (1 thru any number)
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Sequential collection of the given year (1 thru any number)
Attribute Name: Side
Attribute Label: Side
Attribute Definition: Side of the refuge on which sample collected
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: E
Definition: East side
Code Definition:
Code: W
Definition: West side
Attribute Name: Funnel
Attribute Label: Funnel
Attribute Definition: Funnel (or bucket) number (1-15 or 19-20)
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Funnel (or bucket) number (1-15 or 19-20)
Attribute Name: Date
Attribute Label: Date
Attribute Definition: Date of the sample collection
Storage Type: date
Measurement Scale:
Datetime:
Format String: YYYYMMDD
Attribute Name: Volume
Attribute Label: Vol
Attribute Definition: Volume of sample collected
Measurement Scale:
Ratio:
Unit:
Standard Unit: millimeter
Precision: 1
Numeric Domain:
Number Type: real
Bounds:
Minimum: 10
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Flag
Attribute Label: Flag
Attribute Definition: Letter signifiying the quality of the data
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: a
Definition: no obvious problems denoted in the sample
Code Definition:
Code: C
Definition: contaminated- either observed in the field or found from lab results
Code Definition:
Code: G
Definition: bottle overflowed so volume came from associated weather station gauge
Code Definition:
Code: L
Definition: sample lost- either during collection or processing
Code Definition:
Code: M
Definition: sample bottle missing in the field- often due to strong winds
Code Definition:
Code: O
Definition: overflowed- bottle overflowed
Code Definition:
Code: R
Definition: sample obtained from rinsing down funnel- for samples when no rain occured for a long time
Code Definition:
Code: P
Definition: Funnel plugged- volume may be incorrect due to evaporation
Code Definition:
Code: V
Definition: volume only- chemical analysis not done on samples
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: mm
Attribute Label: mm
Attribute Definition: Millimeters of precipitation collected. Calculated from volume mm=volume/55.9 for funnels (1-10 and 13-15) and mm=volume/64 for buckets (11-12 and 19-20).
Measurement Scale:
Ratio:
Unit:
Standard Unit: millimeter
Precision: 0.1
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.1
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Nitrate-Nitrogen
Attribute Label: NO3
Attribute Definition: Concentration of N as Nitrate in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Ammonium-Nitrogen
Attribute Label: NH4
Attribute Definition: Concentration of N as Ammonium in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Sulfate
Attribute Label: SO4
Attribute Definition: Concentration of sulphate in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Cloride
Attribute Label: Cl
Attribute Definition: Concentration of Chloride in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Sodium
Attribute Label: Na
Attribute Definition: Concentration of sodium in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Potassium
Attribute Label: K
Attribute Definition: Concentration of Potassium in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Calcium
Attribute Label: Ca
Attribute Definition: Concentration of calcium in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Magnesium
Attribute Label: Mg
Attribute Definition: Concentration of magnesium in sample
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: Phosphate-Phosphorous
Attribute Label: PO4
Attribute Definition: Concentration of phosphate phosphorous
Measurement Scale:
Ratio:
Unit:
Custom Unit: milligramPerLiter
Precision: 0.01
Numeric Domain:
Number Type: real
Bounds:
Minimum: 0.01
Missing Value Code:
Code: na
Code Explanation: missing
milligrams / liter