Daily Sunspot Evaluation
Observation Sheet Tuesday, 12 August 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)
- 12
- Number of spots (f)
- 67
- Relative number (R)
- 187
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 20 | 51W | 275 | 54W | 1.25 | |
| 2 | DAO – 12 | 12 | 38W | 262 | 41W | 8.5 | |
| 3 | HJY – 1 | 19 | 09W | 233 | 12W | 1.25 | |
| 4 | DLE – 13 | 105 | 39E | 185 | 36E | 6 | |
| 5 | HKI – 18 | 15 | 41E | 182 | 39E | 6.5 | |
| 6 | BXO – 2 | 14 | 71E | 153 | 68E | 8.5 | |
| 7 | EAO – 6 | -5 | 73W | 297 | 76W | 13 | |
| 8 | HAX – 2 | -27 | 12W | 236 | 15W | 2 | |
| 9 | BRO – 2 | -21 | 21E | 203 | 18E | 3.5 | |
| 10 | CAO – 5 | -10 | 47E | 177 | 44E | 4 | |
| 11 | DAI – 4 | -25 | 61E | 162 | 57E | 7 | |
| 12 | HAX – 1 | -21 | 71E | 153 | 68E | 1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.