Daily Sunspot Evaluation
Observation Sheet Saturday, 19 September 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)
- 46
- Relative number (R)
- 116
- Observer
- MB
- Reading
- all checks consistent
- File
- 19980919.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BZO – 4 | 15 | 10W | 83 | 13W | 1 | 217 246 |
| 2 | HS – 1 | 31 | 52E | 21 | 49E | 2 | 214 203 |
| 3 | HK – 6 | 19 | 60E | 13 | 59E | 9 | 215 244 |
| 4 | DAO – 5 | -21 | 19W | 90 | 20W | 8.5 | 210 205 |
| 5 | CRO – 6 | -40 | 12E | 61 | 09E | 4 | 212 211 |
| 6 | DAI – 14 | -30 | 20E | 53 | 19E | 9 | 213 242 |
| 7 | CAI – 10 | -16 | 25E | 48 | 22E | 8 | 216 245 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.