Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 July 1989
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)
- 11
- Number of spots (f)
- 112
- Relative number (R)
- 222
- Observer
- YK
- Reading
- all checks consistent
- File
- 19890719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 3 | 29 | 42W | 39 | 45W | 3 | |
| 2 | HS – 1 | 12 | 30W | 27 | 33W | 2.25 | |
| 3 | CAI – 23 | 26 | 25W | 22 | 28W | 13 | |
| 4 | AX – 2 | 29 | 00 | 357 | 03W | 0.5 | |
| 5 | CAI – 24 | 19 | 34E | 323 | 31E | 8.5 | |
| 6 | HH – 1 | 26 | 65E | 292 | 62E | 3 | |
| 7 | ? – 5 | 24 | 77E | 280 | 74E | 5 | |
| 8 | HK – 1 | -19 | 79W | 76 | 82W | 3 | |
| 9 | HK – 21 | -12 | 36E | 321 | 33E | 7.5 | |
| 10 | EKC – 29 | -22 | 46E | 311 | 43E | 10.5 | |
| 11 | AX – 2 | -20 | 68E | 289 | 65E | 3.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.