Daily Sunspot Evaluation
Observation Sheet Tuesday, 1 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)
- 8
- Number of spots (f)
- 35
- Relative number (R)
- 115
- Observer
- HM
- Reading
- all checks consistent
- File
- 19800701.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 3 | 17 | 11W | 71 | 14W | 2.5 | |
| 2 | ARX – 3 | 9 | 15E | 45 | 12E | 2.5 | |
| 3 | HAX – 4 | -16 | 66W | 126 | 69W | 3 | |
| 4 | HSX – 1 | -11 | 61W | 121 | 64W | 2 | |
| 5 | AXX – 2 | -21 | 51W | 111 | 54W | - | |
| 6 | DCC – 17 | -16 | 30W | 90 | 33W | 10 | |
| 7 | AKX – 2 | -24 | 20E | 40 | 17E | - | |
| 8 | BKO – 3 | -14 | 69E | 351 | 66E | 9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.