Daily Sunspot Evaluation
Observation Sheet Monday, 5 October 1981
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)
- 13
- Number of spots (f)
- 125
- Relative number (R)
- 255
- Observer
- OG
- Reading
- all checks consistent
- File
- 19811005.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 3 | 8 | 68W | 161 | 7W | 2 | |
| 2 | CKI – 17 | 12 | 23W | 116 | 26W | 8.5 | |
| 3 | BRI – 7 | 7 | 05W | 98 | 08W | 8 | |
| 4 | CAI – 8 | 19 | 22E | 70 | 20E | 6 | |
| 5 | DKI – 12 | 9 | 29E | 64 | 26E | 6 | |
| 6 | HAX – 2 | -6 | 64W | 157 | 67W | 2 | |
| 7 | CSI – 12 | -16 | 49W | 142 | 52W | 8 | |
| 8 | HAX – 4 | -17 | 32W | 125 | 35W | 3.5 | |
| 9 | BXI – 20 | -18 | 15W | 108 | 18W | 5.5 | |
| 10 | AXX – 1 | -15 | 07W | 100 | 10W | - | |
| 11 | AXX – 1 | -25 | 04W | 97 | 07W | - | |
| 12 | DKC – 29 | -9 | 00 | 93 | 03W | 9 | |
| 13 | CAI – 9 | -6 | 20E | 73 | 17E | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.