Daily Sunspot Evaluation
Observation Sheet Sunday, 16 January 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)
- 3
- Number of spots (f)
- 27
- Relative number (R)
- 57
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720116.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 15 | 44E | 106 | |||
| 2 | B – 2 | -10 | 42E | 108 | |||
| 3 | E – 19 | -15 | 56E | 94 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.