Oulujärvi   MAXIMUM TIME DERIVATIVE (0.01 nT/sec) OF HORIZONTAL COMPONENT (X,Y)
 
Time (UT)	    01...03       04...06       07...09       10...12       13...15       16...18       19...21       22...24 
 
2023 12  1	  29  29  34    17  11  10    10  13   9    60  30 129   138 135 100    55  32 190   120  50 331   135  91  53 
2023 12  2	  65  66  33    52  29  18    17   7   3     4   4  11    10   4   5    17  23   9     3   5   6    20   7  11