Daily Sunspot Evaluation
Observation Sheet Monday, 13 July 1998
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)
- 4
- Number of spots (f)
- 35
- Relative number (R)
- 75
- Observer
- TA
- Reading
- all checks consistent
- File
- 19980713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 5 | 13 | 39E | 213 | 96E | 1 | 135 |
| 2 | DHO – 2 | -28 | 02W | 254 | 05W | 1 | 141 |
| 3 | DRO – 27 | -21 | 37E | 215 | 34E | 10 | 138 |
| 4 | HR – 1 | -11 | 39E | 213 | 36E | 0.5 | 139 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.