Daily Sunspot Evaluation
Observation Sheet Monday, 21 August 2000
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)
- 8
- Number of spots (f)
- 34
- Relative number (R)
- 114
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20000821.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 10 | 26 | 66W | 233 | 68W | 7.5 | |
| 2 | AX – 2 | 7 | 53W | 220 | 55W | 1 | |
| 3 | AX – 2 | 14 | 52W | 219 | 54W | 0.5 | |
| 4 | HS – 3 | 14 | 23W | 190 | 25W | ~2 | |
| 5 | DAO – 2 | -13 | 63W | 230 | 65W | ~6 | |
| 6 | HA – 4 | -5 | 38W | 205 | 40W | 4 | |
| 7 | DSI – 10 | -10 | 19E | 148 | 17E | 6 | |
| 8 | HS – 1 | -31 | 50E | 117 | 48E | ~2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.