Daily Sunspot Evaluation
Observation Sheet Monday, 26 February 1973
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)
- 19
- Relative number (R)
- 49
- Observer
- HM
- Reading
- all checks consistent
- File
- 19730226.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 12 | 6 | 40E | 138 | 36 | ||
| 2 | A – 1 | -13 | 02E | 176 | 39 | ||
| 3 | B – 6 | 6 | 15W | 193 | 37 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.