Daily Sunspot Evaluation
Observation Sheet Saturday, 13 May 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)
- 37
- Relative number (R)
- 117
- Observer
- HM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19780513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 9 | 22 | 61E | 214 | 58E | ||
| 2 | ? – 1 | 14 | 82E | 193 | 80E | ||
| 3 | ? – 2 | -26 | 79E | 198 | 75E | ||
| 4 | D – 21 | -20 | 20E | 255 | 18E | ||
| 5 | A – 1 | -29 | 24W | 299 | 26W | ||
| 6 | A – 1 | 16 | 76W | 351 | 78W | ||
| 7 | A – 1 | 15 | 22W | 287 ⚠ | 24W | ||
| 8 | ? – 1 | 16 | 10W | 285 | 12W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.