Daily Sunspot Evaluation
Observation Sheet Friday, 12 June 1998
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)
- 41
- Relative number (R)
- 111
- Observer
- MB
- Reading
- all checks consistent
- File
- 19980612.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 13 | 27W | 328 | 29W | - | 256 344 |
| 2 | CRO – 6 | 23 | 23E | 278 | 21E | 06 | 104 102 |
| 3 | CRO – 5 | 32 | 49E | 252 | 47E | 06 | 105 103 |
| 4 | DAI – 17 | -24 | 74W | 15 | 76W | 12 | 82 94 |
| 5 | HK – 5 | -22 | 49W | 350 | 51W | 07 | 93 34 |
| 6 | CRO – 4 | -28 | 16W | 317 | 18W | 04 | 100 98 |
| 7 | HA – 3 | -23 | 64E | 237 | 62E | 03 | 103 101 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.