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| VIRGINIA COAST RESERVE LONG-TERM ECOLOGICAL RESEARCH |
Site PHCK, Month APR, Year 1999 |
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| Day of Month | Precip (mm) | Max Temp. oC | Min Temp. oC | Mean Temp. oC | Wind Speed (m/s) | Wind Dir (deg.) | Vapor Press. (mb) | Solar Rad. KJ/m2 | PAR uE/m2 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6.86 | 18 | 12 | 14.9 | 1.01 | 176 | 14.68 | 6519 | 12571 |
| 2 | 0.00 | 18 | 7 | 13.9 | 1.92 | 323 | 15.39 | 9426 | 17368 |
| 3 | 0.00 | 14 | 7 | 10.8 | 0.90 | 37 | 12.15 | 13643 | 23956 |
| 4 | 6.60 | 28 | 10 | 18.8 | 3.67 | 209 | 17.54 | 17775 | 32316 |
| 5 | 0.00 | 11 | 4 | 8.5 | 2.76 | 24 | 8.45 | 21622 | 37833 |
| 6 | 0.00 | 15 | 0 | 9.2 | 0.93 | 147 | 10.36 | 20421 | 36960 |
| 7 | 0.00 | 24 | 12 | 18.1 | 2.16 | 219 | 14.63 | 22748 | 39380 |
| 8 | 0.00 | 29 | 9 | 18.4 | 1.11 | 213 | 15.27 | 23872 | 41384 |
| 9 | 17.78 | 27 | 11 | 19.5 | 2.25 | 206 | 17.94 | 14257 | 25724 |
| 10 | 0.00 | 16 | 8 | 10.9 | 2.24 | 314 | 9.96 | 22033 | 38106 |
| 11 | 8.13 | 14 | 8 | 10.5 | 1.02 | 274 | 11.31 | 1791 | 4147 |
| 12 | 0.00 | 16 | 8 | 11.7 | 3.57 | 284 | 10.25 | 19764 | 35144 |
| 13 | 0.00 | 16 | 8 | 11.8 | 3.74 | 280 | 6.11 | 25852 | 43985 |
| 14 | 0.00 | 21 | 8 | 13.6 | 2.72 | 261 | 6.70 | 25838 | 45433 |
| 15 | 8.89 | 16 | 6 | 10.8 | 1.16 | 29 | 9.66 | 7063 | 13968 |
| 16 | 3.05 | 22 | 10 | 14.5 | 3.05 | 225 | 11.46 | 19397 | 34302 |
| 17 | 0.00 | 18 | 8 | 13.6 | 3.49 | 214 | 7.08 | 17420 | 31181 |
| 18 | 0.00 | 17 | 5 | 11.3 | 1.86 | 228 | 8.52 | 23326 | 43107 |
| 19 | 0.00 | 19 | 4 | 11.3 | 1.86 | 222 | 8.78 | 20122 | 37219 |
| 20 | 0.00 | 21 | 6 | 14.0 | 2.74 | 262 | 10.83 | 19071 | 34730 |
| 21 | 0.00 | 15 | 3 | 10.1 | 0.90 | 65 | 9.44 | 10999 | 21419 |
| 22 | 0.00 | 28 | 11 | 18.4 | 1.85 | 205 | 16.24 | 23171 | 41063 |
| 23 | 4.83 | 29 | 12 | 22.1 | 4.77 | 202 | 15.97 | 20725 | 37941 |
| 24 | 0.00 | 15 | 4 | 10.8 | 2.62 | 324 | 8.46 | 26668 | 47469 |
| 25 | 0.00 | 16 | 2 | 9.5 | 0.85 | 44 | 8.37 | 27104 | 47851 |
| 26 | 0.00 | 25 | 9 | 17.1 | 4.37 | 207 | 13.66 | 22412 | 40903 |
| 27 | 0.00 | 18 | 10 | 13.6 | 2.05 | 27 | 10.73 | 25743 | 44768 |
| 28 | 0.00 | 15 | 10 | 11.8 | 2.08 | 40 | 10.52 | 12875 | 23694 |
| 29 | 0.00 | 15 | 10 | 11.9 | 2.54 | 27 | 9.29 | 9882 | 17850 |
| 30 | 0.00 | 14 | 9 | 10.9 | 4.58 | 23 | 9.70 | 22387 | 39383 |
| Mon. Tot. Precip. 56.1 mm | Mean wind vel. 2.359 m/s |
| Mon. Mean Temp. 13.4 deg. C | Wind dir 258 deg |
| Mean Max. Temp. 19.0 deg. C | Mean Min. Temp. 7.7 deg. C |
| Extreme Max. Temp 29.2 deg. C | Mean vapor press 11.32 mb |
| Extreme Min. Temp 0.1 deg. C | Total Solar Rad 553929 KJ/sq. m |
| Total photosyn. 991159 uEin/sq.m |
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| Daily Total Precipitation (mm) |
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| Hourly Mean Temperatures (deg. C) |
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| Hourly Max Min and Mean Temperatures (deg. C) |
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| Wind Speed (m/s) |
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| Frequency of Wind Direction |
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| Wind Vectors (circle=1.5 m/s) |
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| Relative Humidity (percent) |
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| Photosynthetically Active Radiation (micro-einsteins per m squared) |
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| Hourly Photosynthetically Active Radiation (micro-einsteins per m squared) |
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| Solar Radiation (KiloJoules per Meter Squared) |
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| Hourly Solar Radiation (KiloJoules per Meter Squared) |
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| Hours of Station Operation |
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| Data Logger Battery Voltage and Internal Logger Temperature |