| Variables | Period | Frequency of sampling | Grizedale | Alice Holt / Straits | Savernake | Ardtornish | Micheldever |
|---|---|---|---|---|---|---|---|
| Foliar sampling and analysis | 1995-2005 | 2 years |  |
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| 2005 | Annual | |
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| 2006 | Annual | |
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| 2007-2008 | Annual | |
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| 2009-2010 | Annual | |
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| Soil analysis | 1995 | Once | |
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| 2010 | Once | |
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| Soil solution | 1995-2001 | 2 weeks | |
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| 2001-2006 | 2 weeks | |
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| 2007-2009 | 4 weeks | |
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| 2009-2010 | 4 weeks | |
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| Soil moisture | 2007-2008 | Hourly | |
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| 2009-2010 | Hourly | |
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| Soil temperature | 1998-2008 | Hourly | |
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| 2009-2010 | Hourly | |
* |
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| Atmospheric deposition | 1995-1996 | 2 weeks | |
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| 1997-2002 | 4 weeks | |
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| 2002-2006 | 4 weeks | |
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V | ||
| 2007-2008 | 4 weeks | |
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| 2009-2010 | 4 weeks | |
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| Increment | 1995-2010 | 5 years | |
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| 2004 | Once | |
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| 2008 | Annual | |
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| 2009-2010 | Annual | |
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| Permanent girth bands | 2008 | Monthly | |
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| 2009-2010 | Monthly | |
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| Phenology (manual) | 1995-2007 | 2 weeks | |
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| 2007-2009 | Monthly | |
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| 2009-2010 | Weekly (spring/autumn) | |
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| Phenology (web cam) | 2009-2010 | Hourly | |
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| Crown condition | 1994-2007 | Annual | |
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| 2009-2010 | Annual | |
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| Leaf area index | 2009-2010 | Once | |
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| Meteorology | 1994-2009 | Daily(manual) | |
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| 1994-2008 | Continuous (Automatic) | |
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| 2009-2010 | Continuous (Automatic) | |
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| SO2,O3,NOx above canopy (diffusion tubes) | 2003 | Monthly | |
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| SO2,O3,NOx,NH4 below canopy (diffusion tubes) | 2001 | Monthly | |
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| 2002-2005 | Monthly | |
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| 2006 | Monthly | |
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| NO2 | 1994-2010 | 2 weeks | |
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| NH4 | 2000-2006 | Monthly | |
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| 2006-2010 | Monthly | |
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| Ground vegetation | 1998-2004 | 3 years | |
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| 2004-2010 | 3 years | |
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| 2003-2004 | Annual | |
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| 2010 | Once | |
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| Quantitative ground vegetation | 2010 | Once | |
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| Litter fall quantification | 1998-2002 | 2 weeks (autumn) 4 weeks (winter-summer) | |
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| 2002-2008 | 2 weeks (autumn) 4 weeks (winter-summer) | |
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| 2009-2010 | 2 weeks (autumn) 4 weeks (winter-summer) | |
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| Litter fall analysis | 2009 | Once | |
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| Growth uptake of heavy metals | 2003 | Single measurement | |
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Key
- V – Volume of throughfall only recorded.
- * – Fortnightly at Micheldever.