Sunspots Observation for 2025 April

1 Observer=================================================================
ASO : : Sunspots Observation  2025  APR
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Year:  2025    Month: April

OBSERVER:      Igor Grágeda Méndez
               Astronomia Sigma Octante

Instr.:  RFR 
    Fl:  1000mm    Aperture:  90mm    Ocular: 25mm

    Method:  Projection    Image diameter: 140mm

Day  UT  Q  g  s  R  Ng Ns  NR Sg Ss  SR  cR   CV  IS M Cld Remarks 
   
01                                                    * 100 rain
02 1440  2  8 52 132  3 19  49  5 33  83  74  157  58    70 st.cirrus
03 1445  2  7 48 118  4 16  56  3 32  62  74  178  55    40 
04                                                    *   0 h.i.
05                                                    *   0 h.i.
06 1340  3  8 38 118  4  4  44  4 34  74  48  127  41    30 
07 1340  3  9 46 136  4  6  46  5 40  90  68  135  50     0 st.cirrus
08 1415  3  8 38 118  3  5  35  5 33  83  34  111  42    30 
09 1445  2  7 39 109  4 16  56  3 23  53  34  100  43    80 st.cirrus
10 1425  3  7 35 105  3 20  50  4 15  55  32  110  40    20 
11 1720  2  6 31  91  4 28  68  2  3  23  11   96  35    80 st.cirrus
12 1400  3  6 39  99  4 36  76  2  3  23  27  146  44    40 
13 1445  2  4 22  62  3 21  51  1  1  11  41   96  25    30 
14 1740  2  5 17  67  3 15  45  2  2  22  34   41  18    40 st.cirrus
15 1435  2  5 17  67  2  8  28  3  9  39  24  100  20    20 
16 1430  2  4 19  59  3 18  48  1  1  11  19   97  21    40 st.cirrus
17 1415  2  7 34 104  5 32  82  2  2  22  16  102  38    30 st.cirrus
18 1325  2  7 31 101  5 29  79  2  2  22  19  127  35    10 st.cirrus
19                                                    * 100 
20                                                    ! 100 h.i.
21 1410  2  8 38 118  5 28  78  3 10  40  56  138  41    60 st.cirrus
22                                                    * 100 
23                                                    * 100 
24 1710  3 10 40 140  6 36  96  4  4  44  34  186  45    10 st.cirrus
25 1555  3 12 40 160  5 19  69  7 21  91  54  195  46    20 st.cirrus
26 1840  2 10 22 122  3  6  36  7 16  86  42  103  27    40 st.cirrus
27                                                    * 100 
28 1830  2  8 31 111  3 11  41  5 20  70  42   95  34    50 st.cirrus
29 1415  2  7 33 103  3 13  43  4 20  60  41  116  36    70 st.cirrus
30 1235  3  5 27  77  3 13  43  2 14  34  29  111  30     0 

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                 Column Headings              ||Sunspots observation summary
                                              ||
UT:     UTC at middle of observation          ||
 Q:     Quality seeing                        ||   Year:  2025   Month: April
    1 Bad, 2 Poor, 3 Fair, 4 Good, 5 Excelent ||
 R:      Wolf relative number for whole disc  ||OBSERVER:  Igor Grágeda Méndez
         g: Total Groups,  s: Total Spots     ||           Astronomia Sigma Octante
NR:     Wolf Relative number North hemisphere ||     
         Ng: North Groups,  Ns: North Spots   ||Monthly Mean   R = 105.32   cR =  38.77
SR:     Wolf Relative number South hemisphere ||
         Sg: South Groups,  Ss: South Spots   ||              NR =  55.41   SR =  49.91
cR:     Wolf Relative number Central          ||
CV:     Classification Value after Malde      ||              CV = 121.23   IS =  37.45
          for whole disc                      ||
IS:     Inter Sol index for whole disc        ||             Cld =  50.36%   Q =   2.36
 M:  !  Cloudy all day                        ||
     *  Cloudy at observation hours           ||The Sun has been observed 22 days on 30
     X  Impossible to make any observation    ||possible, 8 cloudy or w/health issues 
Cld:    Percentage of cloudy sky              ||days impede any kind of observation
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