Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 August 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)
- 5
- Number of spots (f)
- 25
- Relative number (R)
- 75
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720816.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 7 | 63E | 155 | |||
| 2 | A – 3 | -10 | 38E | 180 | |||
| 3 | C – 10 | -25 | 52E | 166 | |||
| 4 | C – 7 | 15 | 23W | 241 | |||
| 5 | A – 3 | 11 | 32W | 250 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.