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(The monthly data in the wdc-like format is here.)

                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (PROVISIONAL)
                                           DECEMBER   2020
      unit=nT                                                                                      UT
      1   2   3   4   5   6   7   8    9  10  11  12  13  14  15  16   17  18  19  20  21  22  23  24
DAY
 1  -10  -8 -10 -11 -11 -11  -8  -9  -10 -11  -9  -7  -7  -7  -6  -4   -3  -3  -7  -8  -7  -6  -5  -7
 2   -7  -7  -9  -9  -8  -9  -9 -10   -8  -5  -3  -1   0   1   5   6    7   7   6   5   4   5   6   5
 3    7   7   4   2   1   1   1  -2   -5  -6  -6  -8  -6  -3   0  -2   -8 -11 -11  -8  -6  -7  -6  -3
 4   -4  -5  -6  -6  -5  -3  -2  -2   -3  -6  -8  -8  -6  -7  -8  -7   -7  -7  -7  -6  -4  -4  -3  -1
 5    1   0  -2  -3  -3  -2  -1   2   -1  -2  -3  -2  -4   1   1   3    5   5   7   6   2   1   1   2

 6    4   3   0  -4  -4   0   0  -2   -1   1  -1  -3   1   6  10   8    5   5   7   8   5   3   1   0
 7    2   2  -2  -2  -1   2   1  -2   -1  -2  -3  -5  -6  -6  -4  -4   -5  -4  -5  -5  -4  -3  -1  -1
 8   -2  -2  -6  -8  -7  -4  -4  -5   -9 -11 -12  -7   0   1   2   6    8   3   1   2   1  -1  -2  -5
 9   -6  -4  -3   0  -2   2   0   1    1   2   3   3   3   1   3   1    4  -2  -4  -1  -4  -8  -7  -6
10   -4  -2  16  18  12  10   8   7    5   2   1   6   4   3   3   3    0  -3  -3  -6  -6  -3   2   4

11    2  -1  -4   4   3  -2  -5  -5   -7 -10  -6  -6  -8  -7  -7  -4   -3  -3  -2  -3  -5  -4  -3  -2
12   -1   0  -2  -4  -5  -6  -6  -7   -5  -2  -1  -1   2   3   6   3    4   6   8   7   5   2   5   3
13    1   1  -2  -5 -10 -12 -13 -12   -9  -7  -5  -3  -2  -3  -6  -3   -4  -2  -2   1  -2  -6  -7  -6
14   -4  -2  -4  -4  -5  -4   0   0   -2  -4  -4  -5  -4  -5  -3   2    4   4   2   2   0  -5  -5  -6
15   -6  -5  -4  -3  -3  -4  -5  -5   -7  -7  -5  -3   1   2   5  11   13  12  12  10   9   6   6   5

16    6   8   5  -2  -3  -2   1   5    7   7   3   3   2   2   0   0    3   4   5   4   0  -2  -1   1
17    2   4   4   4   2   1   2   3    3   5   5   5   3   4   5   4    4   4   6   6   5   3   1   0
18    0   2   5   6   6   4   4   4    5   6   9  11  13  12  11  11    9   9  12  10   8   6   5   5
19    7   6   7  10   7   5   5   7    5  14  15  12   7  -2   1   3    2   4   1  -1  -2  -5  -5  -9
20   -9 -11 -10  -7  -6  -6  -7  -8  -13 -14 -10  -6  -7 -10 -10  -7   -3   3   6   6   7   2   1   3

21    4   7   8   5   3  -4  -8 -11  -11   0  -3   0   1  -1   2  -1    3   2   2   1  -6 -10  -9   2
22    0  -1 -10 -18 -15 -13 -10 -12  -18 -23 -20 -17 -13 -12  -9  -6    0  -1   1  -3  -7  -7  -8  -5
23   -3  -6  -9  -7  -5  -5 -11 -10   -8 -11  -6  -8  -9  -9  -7  -6   -7  -7  -8  -9  -6  -5  -3  -2
24   -1  -2  -3  -5  -7  -5  -7 -10  -18 -20 -14 -14 -10 -13 -15 -15  -13 -14 -14 -13 -10 -11 -11  -9
25   -7  -6  -6  -7  -6  -6  -6  -4   -6  -7  -6  -6  -7  -6  -5  -5   -6  -5  -5  -6  -7  -9  -8  -6

26   -2  -2  -4  -5  -9  -9  -7  -6   -7  -5  -4  -1   0   0   2   4    0   0   1  -1  -3   0   4  11
27    9   6  -1  -2  -2  -4  -4  -5   -5  -4  -3   3   6   6   7   7    8   4   3   0  -1  -1   0   0
28   -4  -8  -5  -3  -3  -3  -5  -6  -10 -14 -11 -11  -5  -6  -7  -5   -4  -2   0  -2  -1  -4  -7  -7
29   -5  -1   0  -1  -3   1   4   4   -4  -9  -6  -2   1  -1  -1  -2   -3  -1  -1  -3  -1  -5  -6  -2
30    2   5   2  -1  -2   1   4  -1  -12 -14 -13  -3  -2  -4  -9  -8   -7  -7  -6  -2  -1  -1  -2  -4

31   -3  -1  -1   0   0  -3  -5  -6   -9 -11 -10  -8  -7  -5  -2  -2   -2  -2  -1   3   6   5   3   2