PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-18:27:40
G02     68.5           27.4                6.1 +/-    0.94      11.2 +/-    0.94  0.030 / 0.050
G05     47.3           51.5                6.8 +/-    0.29       8.4 +/-    0.29  0.040 / 0.050
G12     180.0          16.8                8.7 +/-    1.69      20.6 +/-    1.69  0.090 / 0.210
G13     116.4          24.0               10.2 +/-    1.88      20.3 +/-    1.88  0.080 / 0.200
G15     161.0          20.6                9.6 +/-    1.91      20.7 +/-    1.91  0.080 / 0.260
G21     282.5          25.4                9.2 +/-    1.33      17.9 +/-    1.33  0.080 / 0.240
G25     218.4          40.2                7.2 +/-    0.80      10.5 +/-    0.80  0.080 / 0.190
G26     318.6          11.0               -4.0 +/-   37.43     -10.8 +/-   37.43  0.090 / 0.150
G29     337.0          67.2                6.4 +/-    1.04       6.9 +/-    1.04  0.070 / 0.090