Daily Sunspot Evaluation
Observation Sheet Thursday, 23 March 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)
- 8
- Number of spots (f)
- 94
- Relative number (R)
- 174
- Observer
- ED
- Reading
- all checks consistent
- File
- 19720323.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 34 | 8 | 17E | 331 | |||
| 2 | A – 3 | -11 | 40E | 308 | |||
| 3 | A – 3 | -21 | 05E | 343 | |||
| 4 | B – 24 | -20 | 28W | 16 | |||
| 5 | B – 2 | -12 | 63W | 51 | |||
| 6 | H – 5 | 9 | 40W | 28 | |||
| 7 | B – 5 | 13 | 51W | 39 | |||
| 8 | D – 18 | 10 | 12W | 0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.