| Channel # | Measurement | Beginning Time Stamp | Instrument | Pre- Calibration | Post- Calibration | Comments | Estimated Measurement Uncertainty(%) |
|---|---|---|---|---|---|---|---|
| 1 | Direct normal (thermopile) | 87328 | Eppley NIP 17828E6 | 11-87 | 2-88 | 1.57% change | ± 3.3 |
| 2 | Global normal | None | -- | -- | -- | ||
| 3 | Global horiz. (thermopile) At Welby At SRRL | 87328 88057 | Eppley PSP 17863F3 Eppley PSP 20079F3 | 11-87 7-87 | 2-88 8-88 | 2.22% change 0.73% change | ±3.7 ±2.3 |
| 4 | Global tilt | None | -- | -- | -- | -- | |
| 5 | Direct normal (silicon) | None | -- | -- | -- | -- | |
| 6 | Temperature | 87328 | Taylor Pocket 21430-1 | 10-86 | (Due 10-91) | -- | ±0.2 (deg) |
| 7 | Pressure | Calc'd from elev. | -- | -- | -- | ||
| 8 | Relative humidity | 87328 | Dickson 86100-1 | 9-87 | 10-88 | -- | ±2 (counts) |
| 9 | Wind speed | Observation | -- | -- | -- | -- | |
| 10 | Albedo | -- | None | ||||
| 11-14 | -- | Sun photometer (relative comparisons only) | -- | -- | -- | ||
| 15 | Cloud Cover | -- | Observed | -- | -- | -- | -- |
| 19 | Global horizontal (silicon) | -- | LI-COR Pyr. PY1245 (stability monitor only) | 11-87 | 2-88 | 3.67% change | ±2.9 |