21 4 ACE MAG Interplanetary Magnetic field, level 2 data, 1-second averages. Please acknowledge the ACE/MAG instrument team and the ACE Science Center http://www.srl.caltech.edu/ACE/ASC/level2/mag_l2desc.html http://www.srl.caltech.edu/ACE/ASC/level2/policy_lvl2.html year %4d 0 Year years 1997 2030 -999.9 Linear Scale Integer Year of observation. Timestamp marks beginning of interval 1 Year day %3d 1 DayofYear days 1 366 -999.9 Linear Scale Integer Day of Year of observation (starting from 1). Timestamp marks beginning of interval 1 DayofYear hr %2d 2 Hour hours 0 23 -999.9 Linear Scale Hour of day of observation (starting from 0). Timestamp marks beginning of interval 1 Hour min %2d 3 Minute minutes 0 59 -999.9 Linear Scale Minute of hour of observation (starting from 0). Timestamp marks beginning of interval 1 Minute sec %6.3f 4 Second seconds 0.0 60.0 -999.9 Linear Scale Second of minute of observation. Timestamp marks beginning of interval 1 Second fp_year %13.8f 5 FP_Year years 1997.0 2030.0 -999.9 Linear Scale Fractional Year of observation. Timestamp marks beginning of interval 1 FP_Year fp_doy %10.6f 6 FP_DayofYear days 1.0 367.0 -999.9 Linear Scale Fractional Day of Year of observation. Timestamp marks beginning of interval 1 FP_DayofYear ACEepoch %13.3f 7 ACE Epoch seconds 0 1072742400 -999.9 Linear Scale Epoch of observation - seconds since 00:00:00UT on Jan 1 1996. Timestamp marks beginning of interval 1 ACE Epoch Br %8.3f 9 Br RTN nT -500.0 500.0 -999.9 Linear Scale R-component of Magnetic field vector in RTN coordinates, 1-hour average 1 Br RTN Bt %8.3f 10 Bt RTN nT -500.0 500.0 -999.9 Linear Scale T-component of Magnetic field vector in RTN coordinates, 1-hour average 1 Bt RTN Bn %8.3f 11 Bn RTN nT -500.0 500.0 -999.9 Linear Scale N-component of Magnetic field vector in RTN Cartesian coordinates, 1-hour average 1 Bn RTN Bmag %8.3f 12 Bmagnitude nT 0.0 500.0 -999.9 Linear Scale Magnetic field magnitude 1 Bmagnitude Delta %8.3f 13 RTN Latitude (Delta) Degrees -90.0 90.0 -999.9 Linear Scale The angle in degrees with 0 at Br/Bt plane + toward Bn (-90 to +90 degrees), i.e. the RTN latitude 1 RTN Latitude (Delta) Lambda %8.3f 14 RTN Longitude (Lambda) Degrees -0.0 360.0 -999.9 Linear Scale The angle in degrees with 0 at Br and + toward Bt (0 to 360 degrees), i.e. the RTN longitude 1 RTN Longitude (Lambda) Bgse_x %8.3f 15 Bx GSE nT -500.0 500.0 -999.9 Linear Scale X-component of Magnetic field vector in GSE Cartesian coordinates, 1-hour average 1 Bx GSE Bgse_y %8.3f 16 By GSE nT -500.0 500.0 -999.9 Linear Scale Y-component of Magnetic field vector in GSE Cartesian coordinates, 1-hour average 1 By GSE Bgse_z %8.3f 17 Bz GSE nT -500.0 500.0 -999.9 Linear Scale Z-component of Magnetic field vector in GSE Cartesian coordinates, 1-hour average 1 Bz GSE Bgsm_x %8.3f 18 Bx GSM nT -500.0 500.0 -999.9 Linear Scale X-component of Magnetic field vector in GSM Cartesian coordinates, 1-hour average 1 Bx GSM Bgsm_y %8.3f 19 By GSM nT -500.0 500.0 -999.9 Linear Scale Y-component of Magnetic field vector in GSM Cartesian coordinates, 1-hour average 1 By GSM Bgsm_z %8.3f 20 Bz GSM nT -500.0 500.0 -999.9 Linear Scale Z-component of Magnetic field vector in GSM Cartesian coordinates, 1-hour average 1 Bz GSM Quality %1d 21 Data Quality Flag Flag 0 2 2 Linear Scale Data Quality Flag: 0 = good; 1 = S/C Maneuver & subsequent high-nutation period (~4 hr) 2 = Bad data/missing data 1 Data Quality Flag