Daily Sunspot Evaluation
Observation Sheet Sunday, 9 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)
- 11
- Number of spots (f)
- 47
- Relative number (R)
- 157
- Observer
- TA
- Reading
- all checks consistent
- File
- 20000409.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 2 | 21 | 57W | 197 | 60W | 5.5 | |
| 2 | HR – 2 | 7 | 26W | 166 | 29W | 1 | |
| 3 | CSO – 2 | 11 | 61E | 79 | 58E | 4.5 | |
| 4 | AX – 1 | 11 | 76E | 64 | 73E | ||
| 5 | HA – 1 | -18 | 65W | 205 | 68W | 1.5 | |
| 6 | EAC – 32 | -15 | 10E | 130 | 07E | 10.5 | |
| 7 | AX – 1 | -14 | 20E | 120 | 17E | ||
| 8 | AX – 1 | -34 | 29E | 111 | 26E | ||
| 9 | AX – 1 | -24 | 33E | 107 | 30E | ||
| 10 | HA – 3 | -19 | 35E | 105 | 32E | 3.5 | |
| 11 | ? – 1 | -14 | 83E | 57 | 80E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.