Daily Sunspot Evaluation
Observation Sheet Friday, 28 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)
- 68
- Relative number (R)
- 108
- Observer
- TA
- Reading
- all checks consistent
- File
- 19930528.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 35 | 7 | 20E | 102 | 17E | 8 | 130 |
| 2 | FSC – 29 | 13 | 46E | 76 | 43E | 16 | 129 |
| 3 | HA – 3 | 7 | 73E | 49 | 70E | 3 | 136 |
| 4 | ? – 1 | 7 | 82E | 40 | 29E | - | 135 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.