Daily Sunspot Evaluation
Observation Sheet Monday, 20 August 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)
- 91
- Relative number (R)
- 241
- Observer
- AÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19790820.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 16 | 15E | 254 | 12E | 150 | |
| 2 | ? – 7 | 5 | 78E | 191 | 75E | 157 | |
| 3 | A – 3 | 7 | 31E | 238 | 28E | 158 | |
| 4 | D – 6 | -13 | 46E | 228 ⚠ | 48E | 155 | |
| 5 | D – 9 | -19 | 56E | 213 | 53E | 156 | |
| 6 | D – 6 | -16 | 34E | 235 | 31E | 159 | |
| 7 | ? – 2 | -32 | 71E | 198 | 68E | 160 | |
| 8 | B – 8 | -15 | 20E | 249 | 17E | 161 | |
| 9 | A – 1 | -13 | 04E | 265 | 01E | 162 | |
| 10 | F – 22 | -26 | 03W | 272 | 07W | 148 | |
| 11 | J – 3 | -24 | 21W | 290 | 24W | 146 | |
| 12 | D – 10 | 14 | 73W | 342 | 76W | 152 | |
| 13 | J – 1 | 13 | 82W | 351 | 85W | 136 | |
| 14 | J – 4 | 16 | 31W | 306 ⚠ | 34W | 145 | |
| 15 | G – 6 | 27 | 09W | 278 | 12W | 154 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.