Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 March 1999
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)
- 5
- Number of spots (f)
- 69
- Relative number (R)
- 119
- Observer
- NA
- Reading
- all checks consistent
- File
- 19990316.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 43 | 22 | 29W | 276 | 31W | ~13.5 | |
| 2 | BXO – 2 | 12 | 17W | 264 | 19W | ~3 | |
| 3 | EHC – 19 | 16 | 08E | 237 | 06E | 12 | |
| 4 | OSD – 4 | -25 | 11W | 258 | 13W | ~3 | |
| 5 | HA – 1 | -28 | 18E | 229 | 16E | ~1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.