Daily Sunspot Evaluation
Observation Sheet Monday, 30 July 1979
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)
- 72
- Relative number (R)
- 162
- Observer
- GA
- Reading
- all checks consistent
- File
- 19790730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 17 | 30E | 156 | 27E | 119 | |
| 2 | H – 1 | 13 | 61E | 125 | 58E | 120 | |
| 3 | J – 1 | 5 | 36E | 150 | 33E | 117 | |
| 4 | B – 11 | -11 | 36E | 150 | 33E | 118 | |
| 5 | G – 17 | -21 | 22E | 164 | 19E | 114 | |
| 6 | C – 5 | -15 | 39W | 225 | 42E | 112 | |
| 7 | D – 11 | -16 | 59W | 245 | 62W | 115 | |
| 8 | J – 2 | 13 | 26W | 212 | 29W | 108 | |
| 9 | D – 20 | 15 | 01W | 187 | 04W | 111 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.