Daily Sunspot Evaluation
Observation Sheet Sunday, 24 March 1991
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)
- 9
- Number of spots (f)
- 117
- Relative number (R)
- 207
- Observer
- TA
- Reading
- all checks consistent
- File
- 19910324.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 14 | 07E | 180 | 06E | 0.5 | 131 |
| 2 | AX – 2 | 16 | 16E | 171 | 15E | - | 134 |
| 3 | HA – 3 | -1 | 44W | 231 | 45W | 2.5 | 122 |
| 4 | HS – 1 | -12 | 06W | 193 | 07W | 1.5 | 126 |
| 5 | FKC – 82 | -25 | 00 | 187 | 01W | 21 | 127 |
| 6 | AX – 2 | -13 | 20E | 167 | 19E | 2 | 130 |
| 7 | AX – 4 | -10 | 23E | 164 | 22E | 2 | 135 |
| 8 | AR – 1 | -20 | 28E | 159 | 27E | 0.5 | 128 |
| 9 | EAC – 20 | -14 | 50E | 137 | 49E | 15 | 129 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.