%year,Day,Kx (Range 0),O1 (nT),Counts @ O,Ky (Range 0),O2 (nT),Counts @ O,Kz (Range 0), O3 (nT),Counts @ O
2018   274.5   0.0146328    22.0     -1504   0.0144910   -17.1      1177   0.0142581   -30.1      2108
2018   275.5   0.0146328    22.3     -1523   0.0144910   -17.0      1176   0.0142581   -30.1      2112
2018   276.5   0.0146328    22.4     -1534   0.0144910   -17.0      1175   0.0142581   -30.1      2112
2018   277.5   0.0146328    22.6     -1542   0.0144910   -17.2      1186   0.0142581   -30.1      2114
2018   278.5   0.0146328    22.4     -1534   0.0144910   -17.2      1187   0.0142581   -30.0      2104
2018   279.5   0.0146328    22.3     -1525   0.0144910   -17.2      1188   0.0142581   -29.9      2094
2018   280.5   0.0146328    22.2     -1518   0.0144910   -16.9      1164   0.0142581   -30.1      2108
2018   281.5   0.0146328    22.3     -1523   0.0144910   -17.1      1181   0.0142581   -29.9      2097
2018   282.5   0.0146328    22.1     -1512   0.0144910   -17.1      1183   0.0142581   -30.0      2102
2018   283.5   0.0146328    22.4     -1531   0.0144910   -17.2      1187   0.0142581   -30.0      2102
2018   284.5   0.0146328    22.3     -1525   0.0144910   -17.3      1192   0.0142581   -29.8      2089
2018   285.5   0.0146328    22.8     -1555   0.0144910   -17.4      1202   0.0142581   -30.0      2102
2018   286.5   0.0146328    22.6     -1544   0.0144910   -17.1      1179   0.0142581   -29.8      2093
2018   287.5   0.0146328    22.4     -1534   0.0144910   -17.3      1192   0.0142581   -29.7      2084
2018   288.5   0.0146328    22.3     -1523   0.0144910   -17.5      1205   0.0142581   -29.6      2075
2018   289.5   0.0146328    22.0     -1507   0.0144910   -17.2      1190   0.0142581   -29.9      2094
2018   290.5   0.0146328    22.1     -1513   0.0144910   -17.3      1191   0.0142581   -29.9      2096
2018   291.5   0.0146328    22.2     -1519   0.0144910   -17.2      1188   0.0142581   -29.9      2100
2018   292.5   0.0146328    22.3     -1524   0.0144910   -17.2      1184   0.0142581   -30.0      2104
2018   293.5   0.0146328    22.3     -1524   0.0144910   -17.2      1186   0.0142581   -30.1      2112
2018   294.5   0.0146328    22.4     -1534   0.0144910   -17.1      1181   0.0142581   -30.2      2119
2018   295.5   0.0146328    22.6     -1544   0.0144910   -17.1      1178   0.0142581   -30.3      2126
2018   296.5   0.0146328    22.4     -1529   0.0144910   -17.3      1194   0.0142581   -29.6      2075
2018   297.5   0.0146328    22.1     -1508   0.0144910   -17.2      1185   0.0142581   -30.1      2115
2018   298.5   0.0146328    22.6     -1543   0.0144910   -17.1      1181   0.0142581   -30.0      2101
2018   299.5   0.0146328    22.5     -1538   0.0144910   -17.2      1187   0.0142581   -30.4      2131
2018   300.5   0.0146328    22.5     -1540   0.0144910   -17.3      1192   0.0142581   -30.4      2129
2018   301.5   0.0146328    22.5     -1537   0.0144910   -17.2      1188   0.0142581   -30.1      2110
2018   302.5   0.0146328    22.4     -1532   0.0144910   -17.1      1183   0.0142581   -30.0      2108
2018   303.5   0.0146328    22.7     -1551   0.0144910   -17.1      1179   0.0142581   -30.2      2118
2018   304.5   0.0146328    22.6     -1548   0.0144910   -17.0      1177   0.0142581   -30.0      2104
Note:										
The raw magnetic field B(nT) to Counts conversion are based on the scale factor table from the document		
STEREO/IMPACT Magnetometer Experiment Preliminary Report (11/15/05)						
by Dr. Mario H. Acuna (NASA)										
	B (nT) = K(x,y,z) * (32768 - Counts)									
Howerer, the code in the MAG idl routine have already dealed with the center data around zero issue, 
therefore,	
	Counts = -B/K									
The offsets O1, O2 and O3 are to be subtracted to any values converted to nominal B(nT)				
The "Counts @ O" should be subtracted for all Range 0 data in counts to center data around zero.