Daily Sunspot Evaluation
Observation Sheet Monday, 23 February 1970
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)
- 14
- Number of spots (f)
- 130
- Relative number (R)
- 270
- Observer
- TY
- Reading
- all checks consistent
- File
- 19700223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | 0 | 0 | 285 | |||
| 2 | E – 17 | 19 | 24E | 261 | |||
| 3 | A – 2 | 27 | 65E | 220 | |||
| 4 | A – 2 | 2 | 09E | 276 | |||
| 5 | F – 28 | 16 | 51E | 234 | |||
| 6 | D – 16 | -4 | 27E | 258 | |||
| 7 | J – 2 | -9 | 16E | 269 | |||
| 8 | A – 6 | -21 | 05W | 290 | |||
| 9 | E – 15 | -15 | 17W | 302 | |||
| 10 | A – 3 | -13 | 10W | 295 | 0 | ||
| 11 | H – 4 | -24 | 56W | 341 | |||
| 12 | B – 6 | -21 | 47W | 332 | |||
| 13 | B – 9 | 10 | 28W | 313 | |||
| 14 | C – 16 | 21 | 03W | 288 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.