(The data for this month in the wdc-like format is here.)
WDC for Geomagnetism, Kyoto
Hourly Equatorial Dst Values (FINAL)
DECEMBER 1999
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 12 10 8 4 5 6 5 5 7 6 7 6 8 6 5 5 -3 -2 3 4 -2 1 4 6
2 7 11 16 15 11 12 14 12 13 13 10 14 18 21 16 15 16 15 16 12 11 11 6 3
3 2 3 -1 3 3 6 4 2 2 10 8 -9 -11 -7 -9 -15 -28 -25 -19 -13 -20 -18 -15 -10
4 -8 -7 4 -2 -11 -3 -7 -17 -10 -13 -18 -22 -17 -21 -24 -30 -31 -33 -27 -30 -30 -27 -29 -35
5 -27 -20 -23 -28 -27 -34 -38 -31 -27 -24 -26 -23 -26 -25 -22 -21 -22 -22 -21 -20 -18 -20 -19 -19
6 -12 -7 -5 -20 -24 -22 -16 -16 -23 -22 -18 -17 -17 -17 -25 -26 -22 -24 -30 -26 -19 -15 -13 -13
7 -13 -11 -12 -14 -14 -15 -13 -14 -10 -8 -11 -13 -11 -10 -8 -12 -12 -18 -18 -16 -19 -20 -22 -18
8 -17 -14 -15 -13 -12 -10 -13 -13 -13 -14 -17 -15 -16 -13 -10 -8 -10 -15 -18 -22 -24 -23 -20 -25
9 -27 -18 -14 -18 -26 -21 -19 -18 -19 -21 -26 -18 -18 -17 -13 -12 -14 -15 -12 -17 -14 -11 -19 -22
10 -18 -13 -12 -13 -14 -15 -17 -13 -9 -10 -11 -9 -11 -16 -15 -14 -12 -17 -17 -15 -19 -17 -17 -22
11 -19 -12 -7 -7 -9 -7 -2 -5 -10 -15 -14 -16 -9 -6 -11 -14 -11 -11 -13 -13 -14 -14 -14 -14
12 -12 -6 -4 -8 -11 -12 -11 -13 -15 -17 -19 -13 -13 -11 -16 -14 -8 -9 -8 -14 -17 -19 -21 -25
13 -26 -21 -20 -22 -29 -35 -44 -51 -72 -85 -78 -62 -62 -58 -64 -65 -65 -54 -45 -34 -30 -25 -29 -32
14 -33 -29 -24 -23 -25 -22 -23 -24 -25 -24 -26 -28 -28 -30 -28 -24 -22 -17 -13 -12 -19 -16 -15 -17
15 -17 -15 -12 -12 -11 -6 -2 4 5 4 0 -2 -6 -6 -2 0 0 -1 -1 0 3 -2 -9 -11
16 -9 -7 -8 -8 -11 -10 -15 -9 -1 2 2 0 -2 -1 2 4 4 -1 -1 1 1 -4 -8 -11
17 -10 -3 -1 -4 -8 -4 -2 1 -3 -5 -7 -6 -4 -3 -2 -2 -5 -9 -5 -3 -1 -2 -2 -2
18 -3 -1 0 5 8 9 7 5 9 3 4 4 3 4 6 10 7 4 4 5 4 3 -2 -4
19 -4 -2 -2 -1 0 4 6 5 6 5 6 8 1 -4 0 1 -2 -2 1 0 2 3 5 3
20 4 4 4 3 4 7 11 10 11 13 11 5 7 9 12 14 12 10 9 10 12 10 7 4
21 6 8 7 7 8 8 6 6 7 7 8 10 12 10 10 10 9 8 9 10 9 8 8 10
22 10 13 11 8 10 13 16 16 14 13 11 8 8 8 9 9 7 6 4 2 5 7 9 10
23 12 13 14 14 14 16 19 21 24 26 28 29 31 35 35 30 31 27 27 31 31 26 22 21
24 24 21 26 24 19 13 8 11 14 7 9 16 14 13 13 15 14 14 13 13 13 10 3 -3
25 -1 1 6 8 4 -3 -5 -6 -8 -6 -5 0 1 1 -8 -5 0 4 1 1 3 3 4 -2
26 -1 -2 -1 0 0 2 2 2 3 4 6 6 4 4 7 8 8 10 5 4 3 6 5 6
27 2 -8 -5 7 14 14 10 13 12 11 11 2 -2 0 2 4 1 -1 -4 -4 -5 -4 -4 -6
28 -7 -7 -4 -3 -3 0 5 9 12 11 11 7 4 2 0 -1 2 5 3 4 4 -7 -14 -15
29 -17 -24 -27 -27 -15 -8 -4 -1 5 9 6 5 6 6 5 4 5 3 1 -1 -1 -4 -8 -7
30 -5 -2 -1 0 -1 2 4 8 7 10 8 10 12 14 20 23 25 28 28 24 18 6 6 7
31 0 3 -6 -8 -8 -13 -12 -17 -17 -17 -16 -13 -10 -22 -17 -12 -16 -24 -29 -32 -37 -34 -37 -50