Daily Sunspot Evaluation
Observation Sheet Monday, 15 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)
- 35
- Relative number (R)
- 115
- Observer
- HM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19780515.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 13 | 22 | 32E | 216 | 31E | ||
| 2 | A – 1 | 20 | 57E | 191 | 56E | C | |
| 3 | J – 1 | 13 | 57E | 181 ⚠ | 56E | ||
| 4 | C – 5 | -29 | 56E | 182 ⚠ | 55E | ||
| 5 | D – 9 | -22 | 08W | 256 | 09W | ||
| 6 | A – 1 | -27 | 53W | 301 | 54W | ||
| 7 | A – 4 | -17 | 68W | 316 | 69W | ✓ | |
| 8 | J – 1 | 16 | 32W | 285 ⚠ | 38W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.