Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 July 1980
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)
- 37
- Relative number (R)
- 147
- Observer
- OG
- Reading
- all checks consistent
- File
- 19800729.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRI – 7 | 11 | 51W | 100 | 54W | 2 | |
| 2 | CAO – 6 | 19 | 22E | 27 | 19E | 6 | |
| 3 | HSX – 1 | 28 | 23E | 26 | 20E | 1.5 | |
| 4 | ARX – 3 | 12 | 32E | 17 | 29E | 3.5 | |
| 5 | HAX – 1 | -14 | 74W | 123 | 77W | 2 | |
| 6 | ARX – 3 | -20 | 71W | 120 | 74W | 2.5 | |
| 7 | CAI – 6 | -33 | 44W | 93 | 47W | 6 | |
| 8 | HAX – 4 | -6 | 05E | 44 | 02E | 3 | |
| 9 | DAO – 4 | -8 | 14E | 35 | 11E | 2.5 | |
| 10 | AXX – 1 | -10 | 23E | 26 | 20E | - | |
| 11 | AXX – 1 | -35 | 45E | 4 | 42E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.