Daily Sunspot Evaluation
Observation Sheet Monday, 15 March 1993
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)
- 4
- Number of spots (f)
- 18
- Relative number (R)
- 58
- Observer
- HE
- Reading
- all checks consistent
- File
- 19930315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FAC – 14 | 116 | 22E | 357 | 20E | 16 | 60 |
| 2 | ? – 1 | -6 | 85W | 104 | 86W | - | 54 |
| 3 | BRO – 2 | -10 | 07W | 26 | 08W | 3 | 64 |
| 4 | HA – 1 | -18 | 76E | 303 | 74E | 2 | 63 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.