Daily Sunspot Evaluation
Observation Sheet Friday, 31 March 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)
- 9
- Number of spots (f)
- 24
- Relative number (R)
- 114
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 31 | 42E | 78 | 43E | ||
| 2 | A – 3 | 22 | 32E | 88 | 33E | ||
| 3 | B – 6 | 32 | 58E | 62 | 59E | ||
| 4 | J – 1 | -14 | 54E | 66 | 55E | ||
| 5 | C – 8 | -18 | 44E | 76 | 45E | ||
| 6 | A – 1 | -29 | 26W | 146 | 25W | ||
| 7 | A – 2 | -27 | 34W | 154 | 33W | ||
| 8 | J – 1 | -31 | 79W | 199 | 78W | ||
| 9 | A – 1 | 37 | 47W | 167 | 46W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.