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                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (FINAL)      
                                           DECEMBER   1990
      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  -20 -19 -18 -14 -13 -12 -12 -12  -13 -13 -13 -13 -11 -11 -12 -16  -18 -19 -19 -17 -14 -11  -9  -8
 2   -6  -4  -5  -5  -5  -3  -3  -3    0   2  -1   1   0  -2   1   5    5   1   0   2  -1  -2  -3  -4
 3   -5  -4   0   0   0  -2  -3  -4   -1  -1   0   2   4   6   8   6    6   5   5   2   3   5   6   9
 4   13   7  -9 -24 -26 -25 -27 -30  -32 -37 -36 -33 -26 -25 -23 -27  -24 -21 -20 -14 -13 -12 -12 -17
 5  -12  -9  -8  -7  -9 -10 -14 -22  -20 -25 -23 -14 -13 -17 -18 -14  -17 -19 -12 -12 -14 -14 -12 -11

 6  -10  -8  -3  -6  -8  -8 -12  -9   -5  -8 -10 -13 -12 -14 -16 -13   -8  -7 -14 -17  -9  -4  -5  -9
 7   -7  -6  -8  -8  -8 -11 -12  -7   -4  -3  -3   1   1   1   2   2    1  -5  -8 -10  -5   0   2   2
 8   -1   0   2   2  -1  -8 -14 -13   -5  -5  -6  -9  -3  -4   5  12   17  22  14  13   8   4   5   7
 9   10  13  12   7   0  -4  -7  -7   -6  -9  -8  -4 -10 -11  -8  -4   -4  -1   3   4   7   6   0  -3
10   -2  -2  -1  -1   0   0   1   4    8   9   8   5   4   5   8   8    6   7   7   4   4   5   5   2

11    3   4   4   6   8   9  11  12   15  13   9   9  11  11  13  15   12  10   9   9  11   9   6   7
12   11  14  14  14  14  14  12  13   15  18  17  18  20  26  33  35   26  23  18  20  10   6 -12 -22
13  -22 -27 -21 -22 -31 -39 -36 -35  -35 -34 -29 -29 -29 -25 -19 -14  -13 -11 -12 -15 -12  -9 -10 -12
14  -11 -10  -9  -6  -3  -3  -6  -6   -8  -9  -9 -12 -10  -8  -6  -4   -6  -6  -4  -7  -8  -7  -8 -10
15   -9  -6  -5  -6  -9 -11 -15 -17   -9  -5  -9  -6  -6  -5  -2   3    4   5   0  -7  -6  -2  -5  -5

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

21    1   3   1   0  -3  -5 -10  -9   -6  -6  -7  -7  -4  -2   4   9   12  17  19  15  13  13   9  11
22   13  13  14  15  13  13  10   8    8   9  10  11  10  12  11  11   11  11  10   9   9  11  17  24
23   26  27  27  24  23  25  30  27   13  12  11  12  15  14  17  18   20  20  22  20  18  12   3  -4
24    0   1  -1  -4 -11 -11 -13 -13   -6  -8  -7   3   1  -5  -6  -9  -15 -22 -31 -31 -38 -45 -47 -40
25  -38 -38 -39 -36 -35 -29 -29 -30  -24 -18 -16 -18 -19 -11  -6  -9  -13 -14 -16 -10 -10 -13 -10 -11

26  -14 -15 -14 -12 -11 -12 -15 -11  -10  -8  -2   0  -1  -1  -3   1    5   7   7   8   9  10  11  11
27   10  10   5  -4  -8  -5  -4  -4   -6  -3   0   2   2   6   6   6    6   8  11   9   8  10  10   8
28   10  12  14  12  11   6   8   9   16  19  17  13  12  12  12  13   13  14  16  17  20  21  19  14
29   14  15  16  14  12  12  10  10   14  17  16  14  10   6   3   1    2   6   9  14  17  17  19  17
30   16  16  25  26  29  41  27  17   19  19  26  23  22  21  16  15   16  15  13  21  20  30  33  30

31   30  33  34  29  21  18  14  18   21  23  16  11   9   2  -8 -18  -25 -26 -16  -9  -7  -8 -13 -13