Daily Sunspot Evaluation
Observation Sheet Tuesday, 15 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)
- 15
- Number of spots (f)
- 100
- Relative number (R)
- 250
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790515.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 17 | 15 | 02E | 107 | 03E | 267 | |
| 2 | G – 5 | 38 | 06E | 103 | 07E | 271 | |
| 3 | G – 12 | 14 | 23E | 86 | 24E | 264 | |
| 4 | G – 6 | 26 | 50E | 59 | 51E | 265 | |
| 5 | ? – 1 | -15 | 74E | 35 | 75E | 270 | |
| 6 | D – 12 | -30 | 05E | 104 | 06E | 272 | |
| 7 | ? – 1 | -16 | 09W | 118 | 08W | 257 | |
| 8 | ? – 1 | -26 | 78W | 187 | 72W | 250 | |
| 9 | B – 3 | -15 | 31W | 140 | 30W | 259 | |
| 10 | ? – 2 | -21 | 46W | 155 | 45W | 256 | |
| 11 | H – 1 | 3 | 40W | 149 | 39W | 255 | |
| 12 | H – 14 | 7 | 57W | 166 | 56W | 261 | |
| 13 | ? – 1 | 21 | 76W | 185 | 75W | 253 | |
| 14 | C – 22 | 15 | 24W | 133 | 23W | 268 | |
| 15 | ? – 2 | 28 | 18W | 127 | 17W | 258 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.