Update of National Groundwater Quality Indicators: State and Trends December 2004-2013

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Creative Commons Attribution 3.0 New Zealand

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Raw data, and state and trend calculations for key groundwater quality indicators, including nitrate-nitrogen, ammoniacal-nitrogen, dissolved reactive phosphorus, dissolved iron, dissolved manganese, total dissolved solids content, and electrical conductivity.

Statistics reported on include:
- median and median absolute deviation
- percentiles
- trend magnitudes
- statistical test p-values (from the Mann-Kendall trend test, Kruskal-Wallis test for seasonality, and sign-tests and Wilcoxon rank-sum tests for distribution differences).

The following report and spreadsheets relate to the "Ground water quality" measures on the Environmental Indicators, Te taiao Aotearoa website:
- Moreau M, Daughney C, 2015. Update of National Groundwater Quality Indicators: State and Trends December 2004-2013, GNS Science Consultancy Report 2015/16. 38 p.
- Spreadsheet2_NGMP_results
- Spreadsheet1_NGMP_metadata
- raw_data_for trends_NGMP.

Document ID11707
File nameupdate-of-national-groundwater-quality-indicators-state-and-trends-december-2004-2013.pdf
TypePDF
Size1.96 MB

Sea surface temperature trend statistics xlsx

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08 Oct 2015

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Document ID11517
File namesea-surface-temperature-trend-statistics-xlsx.xlsx
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Size11.6 KB

Greenhouse gas concentrations trend statistics xlsx

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08 Oct 2015

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Document ID11515
File namegreenhouse-gas-concentrations-trend-statistics-xlsx.xlsx
TypeXLSX
Size12.2 KB

Marine_litter_2018_2019_data_quality_report.pdf

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16 Oct 2019

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Document ID22339
File namemarine_litter_2018_2019_data_quality_reportpdf.pdf
TypePDF
Size479 KB

Data quality information for Macroinvertebrate Community Index trends, by monitoring site

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18 Oct 2015

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2
Document ID11703
File namedata-quality-information-for-macroinvertebrate-community-index-trends-by-monitoring-site.pdf
TypePDF
Size187 KB

River water quality modelled state dataservice data quality

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Creative Commons Attribution 4.0 International

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14 May 2019

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Document ID21986
File nameriver-water-quality-modelled-state-dataservice-data-quality.pdf
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Size586 KB

Nitrate nitrogen, 2009 2013

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18 Feb 2016

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Document ID11927
File namenitrate-nitrogen-2009-2013.pdf
TypePDF
Size187 KB

Farm numbers xlsx

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Creative Commons Attribution 3.0 New Zealand

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29 Sep 2015

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Document ID11141
File namefarm-numbers-xlsx.xlsx
TypeXLSX
Size160 KB

Deposited_sediment_data_quality_report.pdf

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06 Apr 2020

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Document ID22583
File namedeposited_sediment_data_quality_reportpdf.pdf
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Size590 KB

Data quality information for river water quality raw data by site

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13 Jul 2017

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Document ID12934
File namedata-quality-information-for-river-water-quality-raw-data-by-site.pdf
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Size130 KB
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