Daily Sunspot Evaluation
Observation Sheet Saturday, 15 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)
- 4
- Number of spots (f)
- 18
- Relative number (R)
- 58
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19930515.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 5 | 15 | 76W | 9 | 78W | 2 | 112 |
| 2 | DAC – 9 | 17 | 57W | 350 | 53W | 5 | 113 |
| 3 | HS – 3 | 8 | 15E | 278 | 13E | 1.5 | 115 |
| 4 | AX – 1 | 13 | 58E | 235 | 56E | - | 121 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.