Daily Sunspot Evaluation
Observation Sheet Friday, 15 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)
- 15
- Number of spots (f)
- 64
- Relative number (R)
- 214
- Observer
- TÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19800815.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 13 | 80W | 212 ⚠ | 81W | ||
| 2 | HAX – 1 | 19 | 51W | 233 | 52W | 125 | |
| 3 | BKO – 11 | 5 | 06W | 188 | 07W | 9 | |
| 4 | DAC – 10 | 13 | 02W | 184 | 03W | 7.5 | |
| 5 | CAI – 9 | 12 | 22E | 160 | 21E | 7 | |
| 6 | AXX – 2 | 16 | 42E | 140 | 41E | 1.25 | |
| 7 | AXX – 1 | 10 | 55E | 127 | 54E | 1 | |
| 8 | DAO – 3 | 18 | 74E | 108 | 73E | 7 | |
| 9 | HAX – 2 | 28 | 53W | 235 | 54W | 1.5 | |
| 10 | BKO – 3 | -10 | 04E | 178 | 03E | 0.5 | |
| 11 | DAI – 13 | -25 | 20E | 162 | 19E | 11 | |
| 12 | HSA – 1 | -21 | 21E | 154 ⚠ | 27E | 2 | |
| 13 | BKO – 3 | -9 | 38E | 144 | 37E | 5 | |
| 14 | HAX – 1 | -11 | 47E | 133 | 48E | 1 | |
| 15 | CAO – 3 | -13 | 61E | 121 | 60E | 2.25 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.