Daily Sunspot Evaluation
Observation Sheet Thursday, 12 July 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)
- 9
- Number of spots (f)
- 53
- Relative number (R)
- 143
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20010712.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 7 | 38W | 237 | 40W | ~1.5 | |
| 2 | HR – 5 | 11 | 32E | 166 | 31E | 1.5 | |
| 3 | HA – 1 | 7 | 58E | 141 | 56E | ~2.5 | |
| 4 | HR – 2 | 14 | 65E | 134 | 63E | 0.5 | |
| 5 | HK – 1 | 17 | 80E | 119 | 78E | 3 | |
| 6 | DAI – 12 | -6 | 24W | 223 | 26W | 5.5 | |
| 7 | HA – 7 | -8 | 05W | 204 | 07W | 3.5 | |
| 8 | DAC – 17 | -7 | 35E | 164 | 33E | ~5 | |
| 9 | CAI – 6 | -13 | 38E | 161 | 36E | 6.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.