Sunspots Observation for 2021 December
1 Observer=================================================================
ASO : Sunspots Observation 2021 DECEMBER
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Year: 2021
Month: December
OBSERVER: Igor Grágeda M.
Astronomia Sigma Octante
Instr.: RFR
Fl: 600mm Aperture: 90mm
Method: Projection Image diameter: 140mm
Day UT Q g s R Ng Ns NR Sg Ss SR cR CV IS M Cld Remarks
01 1255 3 3 14 44 1 6 16 2 8 28 16 41 17 10
02 ! 100 rain
03 1125 3 1 3 13 1 3 13 0 0 0 0 5 4 50
04 * 100 rain
05 ! 100 rain
06 1700 3 1 3 13 0 0 0 1 3 13 0 2 4 70
07 1555 3 1 2 12 0 0 0 1 2 12 0 2 3 90
08 1305 3 0 0 0 0 0 0 0 0 0 0 0 0 80
09 1715 3 0 0 0 0 0 0 0 0 0 0 0 0 70
10 1310 3 0 0 0 0 0 0 0 0 0 0 0 0 80
11 1810 3 0 0 0 0 0 0 0 0 0 0 0 0 60
12 1500 3 0 0 0 0 0 0 0 0 0 0 0 0 50 st.cirrus
13 1100 3 0 0 0 0 0 0 0 0 0 0 0 0 20 st.cirrus
14 ! 100 rain
15 1345 3 4 23 63 0 0 0 4 23 63 0 118 27 20
16 ! 100 rain
17 1815 3 5 32 82 1 3 13 4 29 69 14 109 37 90
18 1730 3 5 38 88 1 4 14 4 34 74 45 135 42 95
19 ! 100 rain
20 1950 3 6 28 88 2 3 23 4 25 65 65 61 32 90
21 * 100 rain
22 1830 3 6 23 83 1 2 12 5 21 71 23 94 28 95
23 ! 100 rain
24 1415 3 7 20 90 2 4 24 5 16 66 37 113 24 90
25 ! 100 rain
26 ! 100 rain
27 * 100 rain
28 1330 3 5 32 82 2 15 35 3 17 47 47 103 35 60
29 1715 3 4 30 70 2 15 35 2 15 35 35 105 34 40
30 1240 3 4 19 59 2 5 25 2 14 34 34 78 22 40
31 1115 3 3 13 43 0 0 0 3 13 43 11 0 0 10
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Sunspots observation summary
Year: 2021
Month: December
OBSERVER: Igor Grágeda M.
Astronomia Sigma Octante
Monthly Mean R = 26.77
NR = 6.77 SR = 20.00 cR = 10.55
CV = 32.39 IS = 10.45
Q = 3.00 Cld = 74.52%
The Sun has been observed 20 days on 31 possible.
11 cloudy days impede observe the Sun
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Column Headings
UT: UTC at middle of observation
Q: Quality seeing
1 Bad, 2 Poor, 3 Fair, 4 Good, 5 Excelent
R: Wolf relative number for whole disc
g: Total Groups, s: Total Spots
NR: Wolf Relative number North hemisphere
Ng: North Groups, Ns: North Spots
SR: Wolf Relative number South hemisphere
Sg: South Groups, Ss: South Spots
cR: Wolf Relative number Central
CV: Classification Value after Malde for whole disc
IS: Inter Sol index for whole disc
M: ! Cloudy all day
* Cloudy at observation hours
X Impossible to make any kind of observation
Cld: Percentage of cloudy sky
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