Daily Sunspot Evaluation
Observation Sheet Monday, 21 June 1999
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)
- 39
- Relative number (R)
- 129
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19990621.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 18 | 67W | 112 | 70W | ~2 | |
| 2 | OSO – 4 | 29 | 55W | 100 | 58W | 7 | |
| 3 | HS – 8 | 36 | 22W | 69 | 25W | ~4.5 | |
| 4 | HA – 6 | 21 | 53E | 352 | 50E | 3 | |
| 5 | HR – 5 | 24 | 79E | 328 | 74E | ~5 | |
| 6 | ? – 6 | 13 | 80E | 325 | 77E | ~9 | |
| 7 | ? – 1 | -22 | 83W | 128 | 86W | ? | |
| 8 | HA – 5 | 21 | 61(E) | 341 | 61(E) | ~2 | |
| 9 | HH – 2 | 19 | 72(E) | 333 | 69(E) | ~3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.