Daily Sunspot Evaluation
Observation Sheet Sunday, 12 August 2001
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 11
- Number of spots (f)
- 73
- Relative number (R)
- 183
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20010812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 23 | 83W | 232 | 86W | ? | |
| 2 | DAC – 10 | 17 | 78W | 227 | 81W | ~10 | |
| 3 | CAO – 4 | 12 | 58W | 207 | 61W | ~5 | |
| 4 | CRI – 8 | 16 | 08W | 157 | 11W | ~6 | |
| 5 | HA – 4 | 8 | 07E | 140 | 06E | 4 | |
| 6 | CAO – 4 | 11 | 74E | 75 | 71E | 10.5 | |
| 7 | HA – 2 | 17 | 73W | 222 | 76W | 5 | |
| 8 | DKC – 14 | -3 | 14W | 163 | 17W | 9 | |
| 9 | HH – 4 | -11 | 11W | 160 | 14W | ~3 | |
| 10 | BXI – 7 | -8 | 01W | 150 | 04W | ~5 | |
| 11 | DRO – 14 | -9 | 30E | 119 | 27E | 8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.