Daily Sunspot Evaluation
Observation Sheet Thursday, 15 March 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)
- 17
- Number of spots (f)
- 68
- Relative number (R)
- 238
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 33 | 10E | 188 | 07E | 170 | |
| 2 | J – 2 | 43 | 25E | 173 | 22E | 169 | |
| 3 | A – 2 | 16 | 11E | 189 | 08E | 167 | |
| 4 | J – 1 | 10 | 09E | 189 | 06E | 150 | |
| 5 | G – 6 | 17 | 28E | 170 | 25E | 153 | |
| 6 | J – 3 | 21 | 37E | 161 | 34E | 152 | |
| 7 | J – 2 | 17 | 39E | 159 | 36E | 161 | |
| 8 | C – 8 | 6 | 29E | 169 | 26E | 154 | |
| 9 | A – 1 | 16 | 58E | 140 | 55E | 157 | |
| 10 | J – 1 | 6 | 75E | 123 | 72E | 168 | |
| 11 | H – 6 | -10 | 61E | 137 | 58E | 158 | |
| 12 | C – 4 | -12 | 68E | 130 | 65E | 165 | |
| 13 | C – 5 | -15 | 62E | 136 | 59E | 166 | |
| 14 | D – 16 | -26 | 11W | 209 | 14W | 163 | |
| 15 | B – 4 | 8 | 54W | 252 | 67W | 156 | |
| 16 | A – 1 | 26 | 41W | 239 | 44W | 164 | |
| 17 | A – 3 | 17 | 05W | 203 | 08W | 144 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.