Daily Sunspot Evaluation
Observation Sheet Saturday, 17 July 1999
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)
- 6
- Number of spots (f)
- 43
- Relative number (R)
- 103
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19990717.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 45 | 72W | 133 | 74W | - | |
| 2 | CAI – 13 | 17 | 52W | 113 | 54W | 10 | Dai-13 |
| 3 | HA – 7 | 10 | 08E | 53 | 06E | 3 | |
| 4 | ? – 1 | 18 | 85E | 336 | 83E | - | |
| 5 | DAC – 10 | -19 | 57W | 118 | 59W | 10 | |
| 6 | FAO – 11 | -15 | 37W | 98 | 39W | ~16 | Fao-11 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.