Daily Sunspot Evaluation
Observation Sheet Sunday, 27 February 1983
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)
- 8
- Number of spots (f)
- 38
- Relative number (R)
- 118
- Observer
- HM
- Reading
- all checks consistent
- File
- 19830227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 9 | 13 | 20W | 225 | 23W | 7 | 50 |
| 2 | CKO – 5 | 14 | 25E | 180 | 22E | 9 | 51 |
| 3 | HSX – 1 | -8 | 43W | 248 | 46W | 2 | 49 |
| 4 | DAI – 9 | -8 | 28W | 233 | 3W | 7.5 | 52 |
| 5 | CAI – 8 | -12 | 25E | 180 | 22E | 6 | 55 |
| 6 | HAX – 4 | -16 | 31E | 174 | 28E | 1.5 | 53 |
| 7 | HHX – 1 | -19 | 45E | 160 | 42E | 3 | 54 |
| 8 | ? – 1 | -17 | 77E | 128 | 74E | 56 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.