Daily Sunspot Evaluation
Observation Sheet Thursday, 14 December 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)
- 36
- Relative number (R)
- 86
- Observer
- HM
- Reading
- all checks consistent
- File
- 19721214.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 21 | 18E | 56 | |||
| 2 | E – 15 | -19 | 13E | 61 | |||
| 3 | C – 6 | -18 | 25W | 99 | |||
| 4 | J – 4 | 12 | 43W | 114 | |||
| 5 | H – 7 | 10 | 31W | 105 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.