Observation sheet 25.01.1979 · Istanbul University Observatory Solar Observations

Daily Sunspot Evaluation

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 →

No	Group (class – spots)	B	Δ L	L	Δ L_f	Margin no.
1	D – 14	21	09E	112	08E	46
2	J – 2	26	39E	82	38E	65
3	E – 19	-12	15E	106	14E	57
4	H – 2	-21	43E	78	42E	54
5	A – 1	-27	58E	63	57E	63
6	A – 1	-28	48E	73	47E	64
7	E – 15	-24	29E	92	28E	55
8	A – 1	-18	23E	98	22E	50
9	D – 8	-26	20W	141	21W	50
10	D – 6	-29	28W	149	29W	68
11	D – 6	-34	53W	174	54W	61
12	A – 3	-19	33W	154	34W	51
13	? – 1	-25	84W	205	85W	59
14	D – 11	-12	23W	144	24W	45
15	B – 4	-13	27W	148	28W	67
16	A – 5	-10	17W	138	18W	66
17	J – 2	-15	49W	170	50W	37
18	D – 5	6	46W	167	47W	50
19	A – 1	7	37W	158	38W	53
20	G – 8	20	51W	172	52W	38
21	E – 26	13	16W	137	17W	49
22	A – 1	21	10W	131	11W	58

Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.