Daily Sunspot Evaluation
Observation Sheet Friday, 31 March 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)
- 12
- Number of spots (f)
- 110
- Relative number (R)
- 230
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20000331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 16 | 9 | 33W | 292 | 36W | 29 | |
| 2 | HS – 1 | 19 | 29W | 288 | 32W | 21 | |
| 3 | DRB – 5 | 14 | 07W | 266 | 10W | 3 | |
| 4 | HBI – 1 | 13 | 60E | 199 | 57E | 1.5 | |
| 5 | HA – 3 | 21 | 66E | 193 | 63E | 1.5 | |
| 6 | DAI – 26 | -19 | 23W | 282 | 26W | 210 | |
| 7 | DSI – 12 | -16 | 10W | 269 | 13W | 29 | |
| 8 | HS – 2 | -15 | 14E | 245 | 19E | 2 | |
| 9 | DAI – 18 | -8 | 16E | 243 | 13E | 8 | |
| 10 | BXO – 3 | -13 | 30E | 229 | 27E | 3 | |
| 11 | HS – 3 | -8 | 53E | 206 | 50E | 2 | |
| 12 | DKC – 20 | -17 | 57E | 202 | 54E | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.