Daily Sunspot Evaluation
Observation Sheet Thursday, 30 September 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)
- 7
- Number of spots (f)
- 19
- Relative number (R)
- 89
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19990930.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 19 | 60W | 207 | 60W | 2 | |
| 2 | CRO – 5 | 21 | 51W | 198 | 51W | 4.5 | |
| 3 | HH – 2 | 20 | 33E | 114 | 33E | 2 | HS-2 |
| 4 | CAO – 3 | 13 | 66E | 81 | 66E | 7 | |
| 5 | AX – 2 | -8 | 16W | 163 | 16W | 0.5 | |
| 6 | AX – 3 | -12 | 14W | 161 | 14W | 1 | |
| 7 | HR – 3 | -12 | 53E | 94 | 53E | 1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.