Daily Sunspot Evaluation
Observation Sheet Tuesday, 17 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)
- 41
- Relative number (R)
- 111
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19830517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 8 | 8 | 02E | 240 | 04W | 55 | 124 |
| 2 | CAO – 4 | 10 | 14E | 228 | 11E | 2 | 125 |
| 3 | DAI – 10 | -11 | 60W | 302 | 69W | 10 | 121 |
| 4 | HAX – 1 | -28 | 55W | 297 | 58W | 225 | 122 |
| 5 | DAO – 6 | -9 | 35W | 277 | 38W | 8 | 126 |
| 6 | HAX – 2 | -27 | 46E | 196 | 43E | 25 | 129 |
| 7 | DAG – 10 | -25 | 62E | 180 | 59E | 12 | 130 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.