Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 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)
- 13
- Number of spots (f)
- 42
- Relative number (R)
- 172
- Observer
- SB0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990623.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 36 | 47W | 66 | 50W | ~3.5 | |
| 2 | HS – 1 | 18 | 28W | 47 | 31W | 1 | |
| 3 | HS – 3 | 22 | 29E | 332 ⚠ | 24E | 2 | |
| 4 | HS – 1 | 19 | 36E | 343 | 33E | 1 | |
| 5 | FAC – 11 | 24 | 53E | 326 | 50E | 18 | |
| 6 | HA – 1 | 20 | 49E | 330 | 46E | 2.5 | |
| 7 | DAC – 10 | 13 | 50E | 329 | 49E | ~9 | |
| 8 | DSO – 2 | 17 | 59E | 320 | 56E | 5 | |
| 9 | HA – 2 | -14 | 28W | 47 | 31W | 1 | |
| 10 | DAC – 5 | -17 | 61E | 318 | 58E | 7 | |
| 11 | ? – 1 | -16 | 79E | 300 | 76E | - | |
| 12 | HA – 3 | 16 | 69E | 310 | 66E | 3.5~ | |
| 13 | ? – 1 | 18 | 78E | 301 | 75E | ? |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.