Daily Sunspot Evaluation
Observation Sheet Saturday, 1 April 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)
- 32
- Relative number (R)
- 112
- Observer
- FA
- Reading
- all checks consistent
- File
- 19780401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 9 | 32 | 47E | 62 | 46E | ||
| 2 | A – 3 | 24 | 38E | 71 | 37E | ||
| 3 | ? – 4 | 22 | 78E | 31 | 77E | ||
| 4 | A – 1 | 16 | 75E | 34 | 74E | ||
| 5 | ? – 1 | -14 | 42E | 67 | 41E | ||
| 6 | C – 8 | -18 | 33E | 76 | 32E | ||
| 7 | A – 2 | 17 | 74W | 183 | 75W | ||
| 8 | A – 4 | 25 | 38W | 147 | 39W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.