Daily Sunspot Evaluation
Observation Sheet Monday, 11 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)
- 13
- Number of spots (f)
- 67
- Relative number (R)
- 197
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 20 | 33W | 270 | 36W | 8.5 | |
| 2 | DKI – 9 | 11 | 25W | 262 | 28W | 8 | |
| 3 | HSX – 1 | 19 | 05E | 232 | 02E | 1.25 | |
| 4 | DRO – 9 | 5 | 53E | 184 | 50E | 5 | |
| 5 | CAI – 12 | 14 | 57E | 180 | 54E | 6 | |
| 6 | BXI – 3 | -11 | 65W | 302 | 68W | 5 | |
| 7 | EAC – 12 | -5 | 57W | 294 | 60W | 11.5 | |
| 8 | HAX – 2 | -27 | 01E | 236 | 02W | 2.75 | |
| 9 | BRO – 3 | -22 | 35E | 202 | 32E | 3.25 | |
| 10 | AXX – 2 | -26 | 51E | 186 | 48E | 0.5 | |
| 11 | CAI – 5 | -11 | 61E | 176 | 58E | 3.5 | |
| 12 | ? – 4 | -26 | 76E | 161 | 73E | 8 | |
| 13 | ? – 1 | -21 | 83E | 154 | 80E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.