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                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (FINAL)      
                                              APRIL   1980
      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  -34 -31 -29 -26 -23 -22 -22 -20  -15 -15 -19 -22 -22 -23 -22 -23  -24 -25 -24 -24 -23 -25 -25 -25
 2  -26 -30 -32 -31 -29 -25 -21 -18  -14 -13 -14 -15 -15 -13 -11  -8   -7  -5  -1   1   0   3   3   1
 3   -2  -3  -1   2   0  -1   4   6    3   1   0   2   2   2   7  11   10   8   0   2   4   3   0  -3
 4   -5  -2  -1   2   7   6   6   5   -7  -8  -3  -7  -3   1   5   8    9   5   5   0  -4  -7  -8 -11
 5  -13 -12 -12 -11 -10  -7  -6  -6   -2  -1  -2   1   3   7   9  11    4   1   7   7   6   3   2   1

 6    0  -2  -3  -2   0   3   5   4    4   5   7  30  29  23  23   9   -8 -27 -20 -19 -14 -21 -26 -22
 7  -28 -32 -26 -23 -24 -22 -15 -17  -22 -15 -14 -14  -7  -5  -5  -4   -2   1   0 -14 -11 -11 -11 -15
 8  -16 -15 -11 -19 -14  -5  -1  -5    2   3   3  -5  -6  -9  -4  -6   -4  -8  -8  -8 -10 -11 -10  -6
 9  -12 -17 -14 -12 -15   3  -7  -1    7  -9 -35 -56 -46 -33 -30 -30  -31 -31 -30 -36 -39 -37 -34 -29
10  -31 -29 -40 -43 -47 -40 -41 -47  -50 -50 -42 -45 -38 -30 -27 -27  -29 -26 -18 -26 -27 -28 -27 -25

11  -28 -31 -28 -26 -27 -25 -23 -29  -22 -20 -21 -25 -29 -33 -22 -19  -19 -35 -49 -64 -77 -87 -72 -67
12  -66 -68 -68 -57 -60 -61 -53 -55  -49 -45 -45 -43 -46 -40 -37 -34  -33 -31 -33 -32 -27 -25 -23 -39
13  -59 -63 -62 -57 -57 -55 -61 -52  -48 -48 -50 -47 -44 -42 -41 -37  -40 -38 -41 -41 -36 -31 -30 -32
14  -31 -34 -33 -29 -27 -28 -28 -25  -23 -22 -22 -24 -23 -21 -20 -16  -13  -5 -10 -19 -13 -10 -21 -28
15  -35 -32 -42 -43 -45 -42 -42 -41  -30 -25 -23 -21 -20 -19 -18 -18  -24 -31 -35 -34 -33 -36 -41 -36

16  -31 -26 -25 -26 -33 -32 -30 -33  -28 -24 -25 -25 -22 -20 -22 -23  -23 -21 -22 -23 -22 -18 -19 -21
17  -18 -19 -21 -28 -33 -28 -23 -22  -21 -18 -15 -14 -14 -13 -11 -10  -10  -8  -8  -9 -11 -14 -14 -17
18  -16 -11  -9  -9  -5  -4  -6  -7   -9 -11 -10 -10  -9  -9  -8  -7   -6  -3  -3  -7  -7  -9  -4  -2
19   -4  -3   2   8  10   7   6   5    4   4   4   4   6   7   8   6    5   3   3   3   8   9  11   9
20    8   6   3  -3  -4  -3  -6  -6   -5  -3  -5  -6  -6  -4  -3   0    3   6   2  -2  -5  -6  -6   0

21   -2  -3   0  -3  -2  -2   0   0   -1   2   6   8   8   8   9   7    8   8   7   7  10  11  11  16
22   31  42  41  40  27  20  12  13   11  13  11  14  12  10   7   8    7   4   3   5   1  -3  -4   0
23    8  16  18  20  18  18  19  15    9   7   9  10  11  11  11  10    4   1   3   6   7   4   0  -1
24    1   2   4   3  -8  -2  -1  -2   -3  -1  -2  -3  -6  -9 -10 -10   -8  -6  -5  -3  -1  -1  -2  -2
25   -2  -4   2   1   1  -6  -1   2    6   7   1  -3   0   1   7   4    2  -2  -2  -1  -1  -1  -2  -1

26    2   4   5   3  -2  -9 -11  -6   -5  -5  -3  -4   1   3   1   0    1   2   0   2   3   3  -1   2
27    4   7  10  10   9  12  10  11   11  11   8  10  10  11  12  11   12  14  11  12  12   9   0   1
28    2   7   8   7   4   5   7   7    9   9  10   9  11  13  14  14   11   9   7   7   6   3   3   4
29    5   7   9   9  10  12  10  10   13  14  15  13  13  14  17  24   24  21  19  11   8   5   6   6
30    7  10  13   8   4   8   8   8    7  10  11  15  16   6   3   7    9   9   5   3   2   1  -1  -3