Daily Sunspot Evaluation
Observation Sheet Saturday, 1 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)
- 17
- Number of spots (f)
- 151
- Relative number (R)
- 321
- Observer
- HE
- Reading
- all checks consistent
- File
- 20000401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKZ – 17 | 10 | 47W | 291 | 48W | 9 | |
| 2 | AX – 1 | 20 | 44W | 288 | 45W | - | |
| 3 | DRO – 13 | 16 | 22W | 266 | 23W | 5 | |
| 4 | DRI – 11 | 22 | 14E | 230 | 13E | 6 | |
| 5 | HR – 2 | 13 | 46E | 198 | 45E | 1 | |
| 6 | CRI – 10 | 22 | 54E | 190 | 53E | 11 | |
| 7 | ? – 1 | 8 | 79E | 165 | 78E | - | |
| 8 | DRO – 17 | -17 | 38W | 282 | 39W | 10 | |
| 9 | AX – 1 | -23 | 31W | 275 | 32W | - | |
| 10 | DRI – 21 | -17 | 25W | 269 | 26W | 10 | |
| 11 | HS – 1 | -15 | 0 | 244 | 01W | 1 | |
| 12 | DAI – 8 | -7 | 01E | 243 | 00 | 4 | |
| 13 | BXO – 8 | -14 | 06E | 238 | 05E | 4 | |
| 14 | CRO – 5 | -12 | 14E | 230 | 13E | 4.5 | |
| 15 | AX – 1 | -8 | 38E | 206 | 37E | - | |
| 16 | DMC – 31 | -17 | 41E | 203 | 40E | 9.5 | |
| 17 | ? – 3 | -18 | 81E | 163 | 80E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.