Daily Sunspot Evaluation
Observation Sheet Friday, 16 February 1979
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)
- 9
- Number of spots (f)
- 84
- Relative number (R)
- 174
- Observer
- GA
- Reading
- all checks consistent
- File
- 19790216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 16 | 18 | 20E | 172 | 18E | 106 | |
| 2 | E – 25 | 17 | 47E | 145 | 45E | 109 | |
| 3 | H – 8 | 2 | 26E | 166 | 24E | 105 | |
| 4 | C – 11 | -15 | 18E | 174 | 16E | 110 | |
| 5 | J – 5 | -26 | 60E | 132 | 58E | 108 | |
| 6 | J – 1 | -38 | 33W | 225 | 35W | 97 | |
| 7 | G – 3 | -18 | 46W | 238 | 48W | 91 | |
| 8 | J – 1 | 11 | 20W | 212 | 22W | 95 | |
| 9 | D – 14 | 22 | 15W | 207 | 17W | 107 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.