Daily Sunspot Evaluation
Observation Sheet Saturday, 19 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)
- 15
- Number of spots (f)
- 120
- Relative number (R)
- 270
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSI – 12 | 20 | 51W | 232 | 54W | 10 | |
| 2 | HKX – 7 | 18 | 08E | 173 | 05E | 3.5 | |
| 3 | AKX – 1 | 5 | 20E | 161 | 17E | 0.5 | |
| 4 | CAI – 11 | 13 | 26E | 155 | 23E | 8 | |
| 5 | DAI – 8 | 27 | 31E | 150 | 28E | 6 | |
| 6 | BXO – 4 | 17 | 47E | 132 | 46E | 5 | |
| 7 | EHI – 22 | -12 | 27W | 208 | 30W | 12 | |
| 8 | CAO – 4 | -24 | 24W | 205 | 27W | 6 | |
| 9 | BXI – 11 | -11 | 07W | 188 | 10W | 6 | |
| 10 | HKX – 14 | -25 | 11E | 170 | 08E | 7.5 | |
| 11 | DCE – 12 | -20 | 25E | 156 | 22E | 8 | |
| 12 | BXO – 4 | -20 | 34E | 147 | 31E | 6 | |
| 13 | DHO – 2 | -12 | 58E | 123 | 55E | 5 | |
| 14 | HEK – 7 | -19 | 67E | 114 | 64E | 6 | |
| 15 | AKX – 1 | -8 | 74E | 107 | 71E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.