Daily Sunspot Evaluation
Observation Sheet Saturday, 21 May 1983
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)
- 72
- Relative number (R)
- 142
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19830521.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | 7 | 55W | 245 | 58W | 124 | |
| 2 | DAC – 14 | 10 | 44W | 234 | 47W | 5.5 | 125 |
| 3 | DKC – 32 | 17 | 35E | 155 | 32E | 10.5 | 131 |
| 4 | HSX – 3 | -27 | 03W | 193 | 06W | 3 | 129 |
| 5 | DAI – 19 | -25 | 11E | 179 | 08E | 9 | 130 |
| 6 | AXX – 1 | -18 | 65E | 125 | 62E | - | 134 |
| 7 | HAX – 2 | -16 | 75E | 115 | 72E | 2 | 135 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.