Daily Sunspot Evaluation
Observation Sheet Thursday, 2 February 1978
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)
- 8
- Number of spots (f)
- 68
- Relative number (R)
- 148
- Observer
- FA
- Reading
- all checks consistent
- File
- 19780202.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 25 | 20 | 09E | 145 | 07E | ||
| 2 | A – 2 | 14 | 15E | 139 | 13E | ||
| 3 | A – 1 | 26 | 45E | 109 | 43E | ||
| 4 | ? – 1 | 20 | 81E | 73 | 79E | ||
| 5 | D – 5 | -26 | 70E | 84 | 68E | ||
| 6 | C – 22 | -29 | 06W | 160 | 08W | ||
| 7 | B – 5 | -17 | 15W | 169 | 17W | ||
| 8 | C – 7 | 14 | 07W | 161 | 09W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.