PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-16:27:50
G02     232.6          71.6               14.0 +/-    0.43      14.7 +/-    0.43  0.080 / 0.060
G05     176.6          10.4               -4.4 +/-   21.64     -12.2 +/-   21.64  0.050 / 0.070
G06     41.8           62.1               12.1 +/-    0.47      13.5 +/-    0.47  0.320 / 0.420
G12     321.6          49.1               12.5 +/-    0.68      16.0 +/-    0.68  0.110 / 0.220
G17     70.3           21.7               11.3 +/-    2.56      23.9 +/-    2.56  0.100 / 0.080
G19     56.2           38.8               11.5 +/-    0.79      17.1 +/-    0.79  0.080 / 0.090
G24     250.6          36.7               12.8 +/-    2.06      19.8 +/-    2.06  0.040 / 0.040
G25     316.4          13.1               10.9 +/-    5.07      28.4 +/-    5.07  0.030 / 0.050