Daily Sunspot Evaluation
Observation Sheet Sunday, 27 February 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)
- 7
- Number of spots (f)
- 48
- Relative number (R)
- 118
- Observer
- HM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19720227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 10 | 23E | 293 ⚠ | |||
| 2 | C – 15 | -7 | 62E | 254 ⚠ | |||
| 3 | G – 10 | -17 | 27E | 343 | |||
| 4 | G – 6 | 6 | 70E | 26 ⚠ | |||
| 5 | J – 1 | 11 | 64E | 20 ⚠ | |||
| 6 | B – 6 | 11 | 51E | 7 ⚠ | |||
| 7 | A – 4 | 7 | 05E | 321 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.