Daily Sunspot Evaluation
Observation Sheet Saturday, 20 January 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)
- 13
- Number of spots (f)
- 159
- Relative number (R)
- 289
- Observer
- GT
- Reading
- all checks consistent
- File
- 19790120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 33 | 19 | 13E | 174 | 11E | 38 | |
| 2 | ? – 6 | 21 | 74E | 113 | 72E | 46 | |
| 3 | C – 20 | 14 | 53E | 134 | 51E | 49 | |
| 4 | A – 3 | 13 | 65E | 122 | 63E | 47 | |
| 5 | B – 8 | 11 | 58E | 129 | 56E | 48 | |
| 6 | C – 7 | -9 | 41E | 146 | 39E | 45 | |
| 7 | C – 20 | -14 | 19E | 168 | 17E | 37 | |
| 8 | A – 2 | -17 | 29E | 158 | 27E | 51 | |
| 9 | B – 7 | -25 | 46E | 141 | 44E | 50 | |
| 10 | A – 1 | -31 | 15W | 202 | 17W | 52 | |
| 11 | D – 28 | -23 | 23W | 210 | 25W | 53 | |
| 12 | C – 19 | -24 | 65W | 252 | 67W | 32 | |
| 13 | G – 5 | 10 | 28W | 216 | 34W | 30 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.