Daily Sunspot Evaluation
Observation Sheet Friday, 1 October 1999
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)
- 5
- Number of spots (f)
- 7
- Relative number (R)
- 57
- Observer
- NA
- Reading
- all checks consistent
- File
- 19991001.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 19 | 71W | 208 | 73W | ~1.5 | |
| 2 | AX – 1 | 20 | 62W | 199 | 64W | - | |
| 3 | HS – 1 | 20 | 22E | 115 | 20E | ~1 | |
| 4 | CAO – 2 | 13 | 54E | 83 | 52E | ~4 | |
| 5 | CAO – 2 | -13 | 45E | 92 | 43E | ~8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.