Daily Sunspot Evaluation
Observation Sheet Thursday, 1 April 1976
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)
- 2
- Number of spots (f)
- 17
- Relative number (R)
- 37
- Observer
- FA
- Reading
- all checks consistent
- File
- 19760401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 13 | -8 | 16W | 42 | 19W | 8116 | |
| 2 | A – 4 | -7 | 22W | 48 | 25W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.