Daily Sunspot Evaluation
Observation Sheet Friday, 18 May 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)
- 34
- Relative number (R)
- 124
- Observer
- GA
- Reading
- all checks consistent
- File
- 19790518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 10 | 24 | 09E | 61 | 06E | 265 | |
| 2 | A – 2 | -13 | 48E | 25 | 45E | 274 | |
| 3 | J – 1 | -15 | 39E | 34 | 36E | 270 | |
| 4 | G – 3 | -30 | 30W | 103 | 33W | 272 | |
| 5 | A – 1 | -17 | 45W | 118 | 48W | 257 | |
| 6 | J – 1 | 2 | 75W | 148 | 78W | 255 | |
| 7 | E – 8 | 14 | 63W | 136 | 66W | 268 | |
| 8 | D – 7 | 15 | 34W | 107 | 37W | 267 | |
| 9 | J – 1 | 28 | 51W | 124 | 54W | 258 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.