%year,Day,Kx (Range 0),O1 (nT),Counts @ O,Ky (Range 0),O2 (nT),Counts @ O,Kz (Range 0), O3 (nT),Counts @ O 2019 1.5 0.0146328 22.3 -1521 0.0144910 -17.0 1177 0.0142581 -29.8 2087 2019 2.5 0.0146328 22.0 -1507 0.0144910 -17.2 1189 0.0142581 -29.7 2086 2019 3.5 0.0146328 22.7 -1552 0.0144910 -17.5 1208 0.0142581 -30.0 2106 2019 4.5 0.0146328 22.6 -1544 0.0144910 -17.3 1194 0.0142581 -30.2 2122 2019 5.5 0.0146328 22.5 -1538 0.0144910 -17.3 1195 0.0142581 -30.2 2118 2019 6.5 0.0146328 22.4 -1531 0.0144910 -17.5 1206 0.0142581 -30.1 2114 2019 7.5 0.0146328 22.4 -1528 0.0144910 -17.4 1201 0.0142581 -30.1 2109 2019 8.5 0.0146328 22.3 -1526 0.0144910 -17.3 1197 0.0142581 -30.0 2104 2019 9.5 0.0146328 22.3 -1523 0.0144910 -17.3 1192 0.0142581 -29.9 2099 2019 10.5 0.0146328 22.3 -1521 0.0144910 -17.2 1188 0.0142581 -29.9 2097 2019 11.5 0.0146328 22.2 -1519 0.0144910 -17.1 1183 0.0142581 -29.9 2096 2019 12.5 0.0146328 22.4 -1530 0.0144910 -17.2 1190 0.0142581 -30.4 2129 2019 13.5 0.0146328 22.4 -1533 0.0144910 -17.2 1186 0.0142581 -30.0 2104 2019 14.5 0.0146328 22.4 -1533 0.0144910 -16.9 1168 0.0142581 -29.9 2096 2019 15.5 0.0146328 22.4 -1534 0.0144910 -17.0 1171 0.0142581 -29.8 2087 2019 16.5 0.0146328 22.5 -1541 0.0144910 -17.1 1183 0.0142581 -30.2 2117 2019 17.5 0.0146328 22.5 -1537 0.0144910 -17.2 1184 0.0142581 -30.1 2109 2019 18.5 0.0146328 22.1 -1514 0.0144910 -17.2 1184 0.0142581 -30.0 2102 2019 19.5 0.0146328 22.1 -1512 0.0144910 -17.1 1183 0.0142581 -29.9 2096 2019 20.5 0.0146328 22.2 -1515 0.0144910 -17.1 1182 0.0142581 -30.0 2103 2019 21.5 0.0146328 22.4 -1527 0.0144910 -17.1 1182 0.0142581 -30.0 2103 2019 22.5 0.0146328 22.3 -1526 0.0144910 -17.1 1182 0.0142581 -30.0 2103 2019 23.5 0.0146328 22.3 -1525 0.0144910 -17.1 1183 0.0142581 -30.0 2103 2019 24.5 0.0146328 22.3 -1523 0.0144910 -17.1 1183 0.0142581 -30.0 2103 2019 25.5 0.0146328 22.3 -1521 0.0144910 -17.1 1183 0.0142581 -30.0 2103 2019 26.5 0.0146328 22.2 -1520 0.0144910 -17.2 1184 0.0142581 -30.0 2103 2019 27.5 0.0146328 22.2 -1519 0.0144910 -16.8 1161 0.0142581 -30.0 2103 2019 28.5 0.0146328 22.2 -1516 0.0144910 -16.9 1166 0.0142581 -30.0 2103 2019 29.5 0.0146328 22.2 -1515 0.0144910 -17.0 1172 0.0142581 -30.0 2103 2019 30.5 0.0146328 22.1 -1514 0.0144910 -17.1 1178 0.0142581 -30.0 2103 2019 31.5 0.0146328 22.1 -1514 0.0144910 -17.1 1183 0.0142581 -30.0 2103 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.