Daily Sunspot Evaluation
Observation Sheet Saturday, 18 January 2003
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)
- 10
- Number of spots (f)
- 36
- Relative number (R)
- 136
- Observer
- MS
- Reading
- all checks consistent
- File
- 20030118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 4 | 16 | 39W | 113 | 42W | 3 | 17 |
| 2 | HS – 1 | 7 | 09E | 65 | 06E | 1.5 | 19 |
| 3 | DAO – 13 | 10 | 21E | 53 | 18E | ~9 | 20 |
| 4 | HA – 2 | 14 | 49E | 25 | 46E | ~1.5 | 21 |
| 5 | BXO – 2 | -15 | 77W | 151 | 80W | 3 | 10 |
| 6 | HA – 3 | -14 | 58W | 132 | 61W | 3 | 13 |
| 7 | HA – 7 | -27 | 54W | 128 | 57W | ~2 | 12 |
| 8 | HS – 1 | -14 | 27W | 101 | 30W | 2 | 15 |
| 9 | HA – 2 | -16 | 14W | 88 | 17W | 0.5 | 18 |
| 10 | AX – 1 | -23 | 08W | 82 | 11W | - | 22 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.