Daily Sunspot Evaluation
Observation Sheet Monday, 18 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
- GA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19790618.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 11 | 26 | 16E | 6 | 13E | 32 | |
| 2 | A – 5 | 13 | 40E | 42 ⚠ | 07E | 34 | |
| 3 | B – 3 | 14 | 24E | 358 | 21E | 73 | |
| 4 | J – 1 | 20 | 64E | 318 | 61E | 77 | |
| 5 | ? – 2 | -7 | 74E | 308 | 71E | 38 | |
| 6 | D – 11 | -19 | 68W | 90 | 71W | 18 | |
| 7 | D – 15 | 5 | 31W | 59 ⚠ | 40W | 35 | |
| 8 | ? – 3 | 16 | 75W | 97 | 72W | 19 | |
| 9 | C – 8 | 7 | 06W | 28 | 09W | 36 | |
| 10 | E – 21 | 22 | 07W | 29 | 40W | 23 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.