Daily Sunspot Evaluation
Observation Sheet Monday, 10 April 2000
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)
- 9
- Number of spots (f)
- 53
- Relative number (R)
- 143
- Observer
- TA
- Reading
- all checks consistent
- File
- 20000410.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 22 | 71W | 198 | 74W | 1.5 | |
| 2 | HS – 1 | 11 | 46E | 81 | 43E | 1.5 | |
| 3 | HR – 1 | 14 | 63E | 64 | 60E | 0.5 | |
| 4 | ? – 2 | 30 | 72E | 55 | 69E | - | |
| 5 | HA – 2 | -17 | 78W | 205 | 81W | ~2 | |
| 6 | EAC – 38 | -16 | 03W | 130 | 06W | 11 | |
| 7 | HA – 4 | -19 | 20E | 107 | 17E | 4.5 | |
| 8 | BXO – 2 | -19 | 64E | 63 | 61E | 4 | |
| 9 | DAO – 2 | -15 | 69E | 58 | 66E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.