Daily Sunspot Evaluation
Observation Sheet Sunday, 17 June 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)
- 10
- Number of spots (f)
- 80
- Relative number (R)
- 180
- Observer
- ED
- Reading
- all checks consistent
- File
- 19790617.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 27 | 23 | 06E | 30 | 03E | 23 | |
| 2 | D – 10 | 8 | 08E | 28 | 05E | 36 | |
| 3 | A – 5 | 27 | 28E | 8 | 25E | 32 | |
| 4 | B – 3 | 15 | 37E | 359 | 34E | 33 | |
| 5 | ? – 1 | 20 | 79E | 317 | 76E | 37 | |
| 6 | D – 10 | -18 | 57W | 93 | 60W | 18 | |
| 7 | A – 2 | -15 | 63W | 99 | 66W | 25 | |
| 8 | D – 12 | 6 | 24W | 60 | 27W | 35 | |
| 9 | ? – 1 | 16 | 85W | 121 | 88W | 13 | |
| 10 | E – 9 | 17 | 65W | 101 | 68W | 19 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.