Daily Sunspot Evaluation
Observation Sheet Thursday, 26 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)
- 11
- Number of spots (f)
- 84
- Relative number (R)
- 194
- Observer
- TY
- Reading
- all checks consistent
- File
- 19700226.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 30 | 15 | 08E | 236 | |||
| 2 | A – 3 | 27 | 24E | 220 | |||
| 3 | A – 1 | 27 | 31E | 213 | |||
| 4 | ? – 3 | 9 | 76E | 168 | |||
| 5 | A – 6 | -3 | 57E | 187 | |||
| 6 | A – 1 | -15 | 58E | 186 | |||
| 7 | G – 3 | -15 | 59W | 303 | |||
| 8 | H – 9 | -8 | 28W | 272 | 0 | ||
| 9 | G – 9 | -4 | 15W | 259 | |||
| 10 | C – 4 | 21 | 45W | 289 | |||
| 11 | D – 15 | 18 | 19W | 263 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.