Daily Sunspot Evaluation
Observation Sheet Thursday, 15 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)
- 5
- Number of spots (f)
- 68
- Relative number (R)
- 118
- Observer
- NA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 3 | 43 | 52W | 140 | 55W | ~5.5 | |
| 2 | EAI – 25 | 18 | 26W | 119 ⚠ | 29W | ~12 | |
| 3 | HA – 9 | 11 | 38E | 55 ⚠ | 30E | ~4.5 | HK-9 |
| 4 | BXI – 9 | -18 | 30W | 118 | 33W | ~5 | |
| 5 | FAI – 22 | -14 | 10W | 98 | 13W | ~16 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.