PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-01:58:00
G01     260.7          39.1                6.8 +/-    1.45      10.0 +/-    1.45  0.070 / 0.090
G03     316.5          35.0                3.2 +/-    1.04       5.0 +/-    1.04  0.060 / 0.070
G10     133.7          10.4                5.0 +/-    1.57      13.8 +/-    1.57  0.060 / 0.040
G11     242.7          16.1                7.0 +/-    1.99      17.0 +/-    1.99  0.050 / 0.040
G14     51.3           46.0                4.2 +/-    0.82       5.5 +/-    0.82  0.040 / 0.070
G18     225.5          33.2                7.6 +/-    1.59      12.4 +/-    1.59  0.050 / 0.070
G22     311.5          57.9                3.8 +/-    1.26       4.3 +/-    1.26  0.140 / 0.370
G25     44.0           12.3                3.1 +/-    2.05       8.2 +/-    2.05  0.120 / 0.330
G31     45.1           66.4                3.4 +/-    0.62       3.7 +/-    0.62  0.100 / 0.130
G32     71.0           27.0                3.3 +/-    0.70       6.1 +/-    0.70  0.160 / 0.170