PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-01:12:30
G02     225.6          70.3               11.1 +/-    0.62      11.7 +/-    0.62  0.050 / 0.020
G05     173.7          10.6               -4.0 +/-   24.02     -11.1 +/-   24.02  0.040 / 0.030
G06     44.6           66.4                9.2 +/-    0.59      10.0 +/-    0.59  0.160 / 0.160
G12     320.7          43.8               10.1 +/-    0.43      13.8 +/-    0.43  0.170 / 0.190
G17     62.1           30.9                9.2 +/-    0.78      15.9 +/-    0.78  0.060 / 0.100
G19     48.4           44.2                9.9 +/-    0.99      13.5 +/-    0.99  0.070 / 0.100
G24     254.4          38.7               12.5 +/-    0.93      18.5 +/-    0.93  0.020 / 0.010