Daily Sunspot Evaluation
Observation Sheet Friday, 19 October 2001
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)
- 111
- Relative number (R)
- 231
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20011019.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 6 | 10 | 56W | 27 | 59W | 8.5 | |
| 2 | EKI – 21 | 18 | 26W | 357 | 29W | 12 | |
| 3 | DAI – 14 | 16 | 15W | 346 | 18W | 6.5 | |
| 4 | CSO – 4 | 27 | 18E | 313 | 15E | 8.5 | |
| 5 | EAC – 21 | 13 | 25E | 306 | 22E | 14.5 | |
| 6 | HA – 1 | 4 | 69E | 262 | 66E | 2 | |
| 7 | CAO – 4 | -13 | 57W | 28 | 60W | 4.5 | |
| 8 | AX – 1 | -20 | 56W | 27 | 59W | - | |
| 9 | DAI – 16 | -17 | 46W | 17 | 49W | 6 | |
| 10 | FKO – 18 | -17 | 43E | 288 | 40E | 19 | |
| 11 | CRO – 3 | -8 | 45E | 286 | 42E | 3 | |
| 12 | HA – 2 | -20 | 65E | 266 | 62E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.