Daily Sunspot Evaluation
Observation Sheet Thursday, 13 May 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)
- 5
- Number of spots (f)
- 63
- Relative number (R)
- 113
- Observer
- MB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19930513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 15 | 15 | 51W | 11 | 53W | 10 | 112 |
| 2 | DAC – 40 | 18 | 30W | 310 ⚠ | 32W | 09 | 113 |
| 3 | HS – 2 | 8 | 42E | 278 | 40E | 02 | 118 |
| 4 | AX – 5 | -13 | 67W | 27 | 69W | 3.5 | 120 |
| 5 | AX – 1 | -3 | 22E | 258 ⚠ | 20E | - | 119 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.