Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 May 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)
- 24
- Relative number (R)
- 64
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720523.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | -21 | 21W | 283 | |||
| 2 | F – 9 | -13 | 35W | 297 | |||
| 3 | H – 4 | -7 | 69W | 331 | |||
| 4 | H – 9 | 14 | 36W | 298 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.