Daily Sunspot Evaluation
Observation Sheet Monday, 4 September 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)
- 7
- Number of spots (f)
- 33
- Relative number (R)
- 103
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720904.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 7 | -8 | 06E | 321 | |||
| 2 | D – 9 | -7 | 60W | 29 | |||
| 3 | A – 1 | -3 | 48W | 15 | |||
| 4 | A – 1 | -2 | 73W | 40 | |||
| 5 | H – 4 | 16 | 24W | 351 | |||
| 6 | B – 6 | 16 | 11W | 338 | |||
| 7 | A – 5 | 16 | 02W | 329 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.