PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-19:12:40
G02     228.4          69.0               12.5 +/-    1.18      13.3 +/-    1.18  0.110 / 0.330
G05     174.0          11.3                7.0 +/-   27.98      19.0 +/-   27.98  0.100 / 0.310
G06     43.2           62.5               10.9 +/-    0.79      12.1 +/-    0.79  0.040 / 0.060
G12     322.0          49.2               10.6 +/-    1.01      13.5 +/-    1.01  0.040 / 0.050
G17     66.0           26.1               10.2 +/-    1.57      19.4 +/-    1.57  0.040 / 0.050
G19     48.5           44.6               10.3 +/-    0.55      13.9 +/-    0.55  0.040 / 0.050
G24     250.4          37.8               13.6 +/-    1.31      20.5 +/-    1.31  0.060 / 0.090