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RMSE values for the relationship between the measured average daily water temperature and 1‐day, 3‐day and 5‐day averaged air temperatures for the experimental ditch and the Zeeland pond for the indicated periods (water temperatures below 4°C were excluded for the calculation of the RMSE)
| Period of averaged air temperatures | Experimental ditch 1991 | Zeeland pond 24 June 2008 to 11 March 2009 |
|---|---|---|
| 1‐day averaged | 2.961 | 2.123 |
| 3‐day averaged | 2.735 | 2.134 |
| 5‐day averaged | 2.856 | 2.384 |
