Daily Sunspot Evaluation
Observation Sheet Thursday, 18 February 1982
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)
- 16
- Relative number (R)
- 66
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19820218.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HRX – 1 | 16 | 55W | 156 | 58W | 1.5 | 65 |
| 2 | DKC – 6 | 4 | 08W | 109 | 11W | 7 | 73 |
| 3 | HSX – 1 | 5 | 05E | 96 | 02E | 2.5 | 72 |
| 4 | DKO – 7 | 11 | 38E | 63 | 35E | 11.5 | 74 |
| 5 | HAX – 1 | -12 | 63W | 164 | 66W | 2 | 64 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.