Daily Sunspot Evaluation
Observation Sheet Friday, 20 June 1980
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)
- 89
- Relative number (R)
- 219
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 18 | 77W | 281 | 79W | 4 | |
| 2 | CAO – 12 | 18 | 15W | 220 | 17W | 7.5 | |
| 3 | BAO – 2 | 11 | 15W | 220 | 17W | 2.5 | |
| 4 | BJS – 16 | 23 | 12W | 217 | 14W | 5.5 | |
| 5 | AXX – 3 | 25 | 47E | 158 | 45E | 1 | |
| 6 | HKA – 1 | -13 | 72W | 277 | 74W | 2.5 | |
| 7 | BAO – 3 | -7 | 10E | 195 | 08E | 2.5 | |
| 8 | CAI – 17 | -12 | 23E | 182 | 21E | 7 | |
| 9 | BAO – 3 | -17 | 29E | 176 | 27E | 5 | |
| 10 | CAO – 7 | -20 | 32E | 173 | 30E | 5 | |
| 11 | EKC – 21 | -28 | 40E | 165 | 38E | 12.5 | |
| 12 | HJA – 1 | -12 | 50E | 155 | 48E | 1 | |
| 13 | HAX – 1 | -13 | 78E | 127 | 74E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.