Daily Sunspot Evaluation
Observation Sheet Friday, 13 August 1993
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)
- 40
- Relative number (R)
- 110
- Observer
- TA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19930813.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRS – 8 | 10 | 73W | 256 | 76W | 7 | 209 |
| 2 | HS – 1 | 13 | 65W | 248 | 68W | 2 | 198 |
| 3 | AX – 5 | 11 | 16W | 199 | 19W | 2 | 212 |
| 4 | AX – 1 | 18 | 05E | 178 | 02E | - | 202 |
| 5 | AX – 1 | 19 | 11E | 172 | 08E | - | 211 |
| 6 | DAR – 23 | -2 | 45E | 138 | 42E | 6 | 206 E |
| 7 | ? – 1 | -11 | 77E | 111 ⚠ | 74E | 1 | 210 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.