Daily Sunspot Evaluation
Observation Sheet Wednesday, 5 April 1972
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)
- 4
- Number of spots (f)
- 30
- Relative number (R)
- 70
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720405.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | -9 | 51E | 126 | |||
| 2 | B – 8 | -10 | 08W | 185 | |||
| 3 | H – 12 | -9 | 20W | 197 | |||
| 4 | B – 8 | 1 | 30W | 207 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.