Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 June 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)
- 7
- Number of spots (f)
- 154
- Relative number (R)
- 224
- Observer
- MA
- Reading
- all checks consistent
- File
- 19700616.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 87 | 17 | 12E | 222 | |||
| 2 | J – 1 | 21 | 71E | 163 | |||
| 3 | J – 1 | -9 | 50E | 184 | |||
| 4 | A – 2 | -3 | 05E | 229 | |||
| 5 | J – 1 | -16 | 72W | 306 | |||
| 6 | E – 18 | 17 | 31W | 265 | |||
| 7 | D – 44 | 16 | 07W | 241 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.