Daily Sunspot Evaluation
Observation Sheet Thursday, 23 June 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)
- 8
- Number of spots (f)
- 72
- Relative number (R)
- 152
- Observer
- HM
- Reading
- all checks consistent
- File
- 19830623.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 8 | 14 | 45W | 158 | 48W | 2.5 | 158 |
| 2 | DAO – 14 | 13 | 09W | 122 | 12W | 7 | 164 |
| 3 | DAH – 17 | 16 | 06E | 107 | 03E | 9.5 | 165 |
| 4 | DSI – 9 | 17 | 22E | 91 | 19E | 7 | 169 |
| 5 | AXX – 1 | 18 | 30E | 83 | 27E | 168 | |
| 6 | ARX – 2 | 12 | 32E | 81 | 29E | 2.5 | 172 |
| 7 | DAO – 10 | -12 | 44W | 157 | 47W | 6 | 162 |
| 8 | DAI – 11 | -9 | 43E | 70 | 40E | 7 | 169 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.