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September 2025
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Date
 
Space Environment Research Center, Kyushu University 
EDst1h (Realtime Ver.) 
Unit: nT 

September 2025 
 
Universal Time 

DAY       0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23 

  1      -1   -4   -4   -1   -4   -9   -6   -8   -5    0    3    5   11    8    7    5    2   -1    2   -2   -4    0   50   33 
  2      15  -14  -83  -47  -28  -48  -38  -24  -10  -21  -15    7   -7  -23  -22  -19  -16  -27  -41  -50  -50  -56  -61  -68 
  3     -67  -62  999  999  999  999  999  999  999  999  -31  -30  -26  -29  -31  -38  -37  -34  -35  -38  -27  -25  -26  -25 
  4     -27  -25  999  999  999  999  999  999  999  999  -14  -15  -19  -22  -24  -27  -26  -30  -27  -27  -31  -34  -22  -28 
  5     -28  -27  999  999  999  999  999  999  999  999  -18  -25  -25  -21  -14  -16  -19  -20  -19  -17  -15  -16  -12   -9 

  6     -15  -28  -51  -61  -57  -46  -32  -32  -35  -31  -25  -28  -36  -58  -67  -49  -49  -35  -53  -76  -47  -45  -47  -46 
  7     -44  -43  -43  -42  -44  -44  -43  -41  -40  -39  -36  -32  -27  -28  -27  -29  -29  -27  -26  -25  -26  -29  -28  -23 
  8     -20  -24  -26  -20  -25  -21  -19  -30  -28  -21  -23  -40  -42  -29  -27  -27  -28  -31  -26  -23  -20  -14  -18  -14 
  9     -17  -20  -22  -13  -29  -23  -19  -11   -7  -13  -12  -15  -10  -13  -16  -18  -15  -13  -15  -13   -9  -18  -12  -19 
 10     -26  -45  -57  -56  -48  -45  -38  -33  -24  -21  -19  -20  -15  -14  -14  -19  -11  -15  -15  -14  -13  -12  -16  -20 

 11     -28  -28  -21  -43  -45  -41  -47  -48  -35  -38  -32  -30  -27  -28  -23  -29  -26  -24  -17  -12  -13  -14  -15  -14 
 12     -10   -9  -11  -16  -17  -25  -28  -22  -17  -15  -16  -21  -26  -30  -30  -25  -22  -23  -21  -21  -10  -11  -14  -12 
 13     -11  -14  -15  -17  -24  -30  -31  -31  -14  -19  -17  -19  -19  -23  -19  -21  -19  -18  -17  -16  -12   -9   -6   -2 
 14      -3   -9  -10   -9  -16  -15  -15  -13   -9  -10   -3    1   -2   -4   -5   -3    1    8   15   11   18   11    9   10 
 15     -20  -70  999 -155  -95  -94  -85  -81  -82  -62  -51  -54  -65  -78  -92  -65  -58  -55  -47  -34  -38  -37  -43  -33 

 16     -48  -60  -42  -52  -42  -42  -36  -37  -38  -31  -33  -27  -22  -29  -26  -33  -32  -29  -26  -24  -23  -23  -29  -25 
 17     -24  -25  -31  -31  -31  -35  -38  -24  -27  -24  -28  -27  -24  -24  -23  -18  -19  -20  -20  -18  -21  -21  -21  -20 
 18     -17  -18  -19  -24  -20  -23  -26  -23  -20  -22  -19  -22  -26  -25  -19  -19  -13  -19  -17  -16  -16  -16  -17  -16 
 19     -15  -17  -18  -19  -20  -22  -22  -21  -18  -16  -11   -8   -2   -4   -4   -4   -7   -7   -6   -7   -5   -5   -7   -7 
 20      -4   -9   -9  -11  -18  -25  -26  -19  -15  -14   -7   -6    1    0    0   -3   -4   -3   -2   -2   -1   -1   -3   -1 

 21       1   -2   -5   -8   -5   -9  -11   -8   -5   -2    2    7   17   16   13    6    2    1    1    2    1   -1   -1    6 
 22       9    4    6   -5  -12  -21   -7    2    1   10   22   25   22   -2   10    9    4   -2   -9  -12  -14  -10   -5   -5 
 23      -6  -17  -38  -38  -40  -34  -37  -24  -11  -15   -8   -8  -10  -28  -25  -32  -42  -31  -18  -20  -15  -12  -13  -17 
 24     -16  -19  -20  -20  -25  -20  -17  -19  -17  -16  -13  -11  -11  -18  -12   -9  -16  -11   -9   -5   -5   -9  -14   -7 
 25      -2   -7   -7  -12  -17  -17  -16  -15  -11  -10   -6   -3   -1   -7    0  -10  -13  -16  -10   -6   -6   -9  -15  -16 

 26     -10  -19  -17  -11  -18  -26  -23  -17  -13  -10   -7   -4   -1    0    1   -3   -3   -2   -2   -2   -5   -2    1    2 
 27       3   -4   -7   -7   -5  -11  -17   -7   -4   -4   -1    1    4    4    7    2    2    4    8    7    6    6    2    1 
 28       0    4   -9  -25  -15  -13  -12   -7   -1    2    7    9   14   11   12    7    2   -8   -7    0    1    1  -12  -16 
 29     -10  -21  -27  -24  -36  -40  -39  -32  -31  -48  -63  -85  -99  -92  -88 -104 -121 -124 -103 -112 -101  -71  -71  -71 
 30     -63  -55  -62  -79  -52 -103  -73  -93  -95 -100  -87  -76 -106 -105 -110 -112 -110 -103  -71  -84  -75  -64  -48  -64 




 
Space Environment Research Center, Kyushu University 
EDst6h (Realtime Ver.) 
Unit: nT 

September 2025 
 
Universal Time 

DAY       0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23 

  1      -3   -3   -4   -5   -5   -5   -5   -4   -2    1    4    6    7    6    5    4    2    0   -1    8   13   15   19   25 
  2      -8  -22  -36  -43  -45  -33  -28  -26  -17  -12  -11  -14  -13  -13  -19  -25  -29  -34  -40  -47  -54  -58  -60  -63 
  3     -65  -66  -65  -62  999  999  999  -31  -30  -29  -29  -29  -31  -32  -33  -34  -36  -35  -33  -31  -29  -28  -26  -26 
  4     -26  -26  -26  -25  999  999  999  -14  -14  -16  -18  -19  -21  -22  -25  -26  -27  -28  -29  -29  -28  -29  -29  -28 
  5     -26  -28  -28  -27  999  999  999  -18  -24  -24  -23  -21  -20  -20  -19  -18  -17  -18  -18  -17  -15  -14  -14  -13 

  6     -30  -38  -44  -46  -47  -44  -39  -33  -30  -31  -35  -41  -44  -48  -49  -52  -55  -51  -51  -50  -52  -51  -46  -46 
  7     -44  -44  -43  -43  -43  -42  -42  -41  -38  -36  -34  -32  -30  -29  -28  -28  -27  -27  -27  -27  -26  -26  -26  -25 
  8     -24  -23  -23  -22  -23  -24  -24  -24  -27  -31  -30  -30  -31  -32  -31  -28  -27  -26  -24  -22  -19  -18  -17  -16 
  9     -17  -19  -21  -21  -19  -17  -17  -14  -13  -11  -12  -13  -14  -15  -14  -15  -15  -14  -14  -13  -14  -16  -16  -18 
 10     -36  -42  -47  -48  -46  -40  -35  -30  -26  -22  -19  -17  -17  -16  -15  -15  -15  -14  -13  -14  -15  -17  -17  -19 

 11     -26  -31  -34  -37  -41  -43  -42  -40  -38  -35  -32  -30  -28  -27  -26  -25  -22  -20  -18  -16  -14  -13  -13  -14 
 12     -13  -13  -15  -18  -20  -21  -21  -21  -20  -20  -21  -23  -25  -26  -26  -25  -24  -20  -18  -17  -15  -13  -12  -12 
 13     -14  -16  -19  -22  -25  -25  -25  -24  -22  -20  -19  -20  -20  -20  -20  -19  -18  -17  -15  -13  -10   -8   -7   -5 
 14      -7   -8  -11  -12  -13  -13  -13  -11   -8   -6   -5   -4   -3   -2   -1    2    4    8   10   12   12    7    6    3 
 15     -41  -64  -87  -99 -100  -97  -83  -76  -69  -66  -65  -67  -67  -69  -69  -66  -58  -49  -45  -42  -39  -39  -40  -40 

 16     -46  -46  -48  -46  -42  -41  -38  -36  -34  -31  -30  -28  -28  -28  -29  -29  -28  -28  -26  -26  -25  -25  -25  -25 
 17     -28  -28  -30  -32  -31  -31  -30  -29  -28  -25  -26  -25  -24  -23  -21  -21  -20  -19  -20  -20  -20  -20  -20  -20 
 18     -20  -20  -20  -22  -23  -23  -22  -22  -22  -22  -22  -22  -22  -21  -20  -19  -17  -17  -16  -17  -16  -16  -16  -16 
 19     -17  -18  -19  -20  -20  -20  -20  -18  -16  -13  -10   -8   -6   -5   -5   -5   -6   -6   -6   -6   -6   -6   -6   -6 
 20      -8  -10  -13  -16  -18  -19  -20  -18  -15  -10   -7   -4   -2   -2   -1   -2   -2   -2   -2   -2   -2   -1   -1   -1 

 21      -3   -3   -5   -7   -8   -8   -7   -6   -3    2    6    9   10   10    9    6    4    2    1    0    1    2    2    3 
 22       3    1   -3   -6   -6   -7   -4    1    9   14   13   14   14   11    7    2    0   -4   -7   -9   -9   -9   -8   -7 
 23     -19  -25  -30  -34  -35  -31  -27  -21  -17  -13  -13  -16  -19  -24  -28  -29  -28  -26  -23  -18  -16  -15  -14  -14 
 24     -18  -20  -20  -20  -20  -20  -19  -17  -16  -15  -14  -14  -12  -13  -13  -12  -10   -9   -9   -9   -8   -7   -8   -8 
 25      -8   -9  -11  -13  -14  -14  -14  -12  -10   -8   -6   -4   -4   -5   -8   -9   -9  -10  -10  -10  -10  -10  -11  -13 

 26     -15  -15  -17  -19  -19  -18  -18  -16  -12   -9   -6   -4   -2   -2   -1   -1   -2   -3   -3   -2   -1   -1    0    1 
 27      -2   -3   -5   -9   -9   -8   -8   -7   -5   -2    0    2    3    3    4    4    5    5    6    6    5    4    3    2 
 28      -5   -8  -10  -12  -14  -12   -8   -4    0    4    7    9   10    9    7    3    1   -1   -2   -4   -6   -6   -7   -9 
 29     -19  -23  -27  -31  -33  -33  -38  -42  -50  -60  -70  -79  -89  -98 -105 -105 -109 -111 -105  -97  -88  -82  -76  -69 
 30     -67  -64  -69  -71  -77  -82  -86  -92  -87  -93  -95  -97  -99 -103 -108 -102  -98  -93  -85  -74  -68  -68  -65  -62 





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