Daily Sunspot Evaluation
Observation Sheet Thursday, 2 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)
- 6
- Number of spots (f)
- 40
- Relative number (R)
- 100
- Observer
- ED
- Reading
- all checks consistent
- File
- 19720302.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 7 | 12 | 60E | 202 | |||
| 2 | B – 7 | -9 | 06E | 256 | |||
| 3 | D – 7 | -8 | 40E | 222 | |||
| 4 | E – 8 | -8 | 72E | 190 | |||
| 5 | A – 2 | -9 | 31W | 293 | |||
| 6 | D – 9 | 9 | 35W | 297 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.