Sunspots Observation for 2021 October
1 Observer=================================================================
Sunspots Observation 2021 OCTOBER
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Year: 2021
Month: October
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 1545 3 2 11 31 1 6 16 1 5 15 16 101 13 5
02 1410 3 0 0 0 1 3 13 0 0 0 13 26 4 20 st.cirrus
03 1230 3 1 9 19 1 9 19 0 0 0 19 29 10 0
04 1410 3 2 8 28 2 8 28 0 0 0 17 66 9 30
05 1440 3 2 5 25 2 5 25 0 0 0 0 68 6 80 st.cirrus (big halo)
06 1750 3 1 1 11 1 1 11 0 0 0 0 40 1 80
07 ! 100 rain
08 1430 3 1 6 16 1 6 16 0 0 0 16 25 7 20
09 1330 3 1 7 17 1 7 17 0 0 0 17 52 8 90
10 1855 3 1 5 15 1 5 15 0 0 0 15 49 6 90 st.cirrus
11 1310 3 1 4 14 1 4 14 0 0 0 0 49 5 10
12 X 0
13 1315 2 1 3 13 1 3 13 0 0 0 0 49 4 80 st.cirrus
14 1240 3 1 2 12 1 2 12 0 0 0 0 41 3 0
15 1415 3 1 1 11 1 1 11 0 0 0 0 40 1 20
16 1555 3 1 1 11 1 1 11 0 0 0 0 10 1 90 st.cirrus
17 1215 3 0 0 0 0 0 0 0 0 0 0 0 0 80 st.cirrus
18 1455 3 1 1 11 0 0 0 1 1 11 0 10 1 30
19 1535 3 1 1 11 0 0 0 1 1 11 0 10 1 80 st.cirrus
20 1310 3 1 1 11 0 0 0 1 1 11 0 10 1 40 st.cirrus
21 1740 3 1 1 11 0 0 0 1 1 11 0 10 1 90 st.cirrus
22 1315 3 2 3 23 0 0 0 2 3 23 11 18 4 0 smog
23 1340 3 2 8 28 0 0 0 2 8 28 11 56 9 0
24 1240 3 2 10 30 0 0 0 2 10 30 11 56 11 0
25 1400 3 2 11 31 0 0 0 2 11 31 0 56 12 80 st.cirrus, smog
26 1735 3 4 18 58 0 0 0 4 18 58 11 62 20 60
27 1250 3 4 18 58 1 3 13 3 15 45 0 75 21 10
28 1235 3 3 16 46 1 5 15 2 11 31 0 70 18 30
29 1325 3 3 26 56 1 13 23 2 13 33 0 84 28 50
30 1240 3 2 14 34 1 9 19 1 5 15 0 56 16 20 st.cirrus
31 * 100
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Sunspots observation summary
Year: 2021
Month: October
OBSERVER: Igor Grágeda M.
Astronomia Sigma Octante
Monthly Mean R = 20.35
NR = 9.39 SR = 11.39 cR = 5.06
CV = 39.29 IS = 7.13
Q = 2.96 Cld = 46.17%
The Sun has been observed 28 days on 31 possible.
3 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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