Daily Sunspot Evaluation
Observation Sheet Friday, 7 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)
- 12
- Number of spots (f)
- 113
- Relative number (R)
- 233
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19890707.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 3 | 19 | 69W | 225 | 42W | 3.5 | |
| 2 | AX – 1 | 14 | 07W | 163 | 10W | - | |
| 3 | AX – 1 | 14 | 06W | 162 | 09W | - | |
| 4 | CAI – 23 | 23 | 10E | 146 | 07E | 9 | |
| 5 | CAI – 31 | 9 | 16E | 140 | 13E | 9.5 | |
| 6 | AR – 1 | 18 | 53E | 103 | 50E | 0.5 | |
| 7 | AX – 2 | 21 | 54E | 102 | 51E | 1.5 | |
| 8 | BXO – 8 | 24 | 62E | 94 | 59E | 7 | |
| 9 | DKC – 23 | -20 | 10W | 166 | 13W | 6 | |
| 10 | CAI – 17 | -10 | 56E | 101 | 52E | 14 | |
| 11 | CAO – 2 | -13 | 73E | 82 | 70E | 6 | |
| 12 | HK – 1 | -17 | 80E | 76 | 72E | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.