PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-04:28:00
G01     222.1          12.9                5.0 +/-    4.17      13.0 +/-    4.17  0.140 / 0.390
G03     272.8          69.2                5.1 +/-    0.82       5.4 +/-    0.82  0.140 / 0.200
G09     299.4          16.0                2.9 +/-    2.46       6.9 +/-    2.46  0.130 / 0.270
G14     91.5           21.1                3.3 +/-    2.02       7.0 +/-    2.02  0.110 / 0.250
G16     138.0          51.4                6.2 +/-    0.35       7.7 +/-    0.35  0.030 / 0.040
G22     207.0          65.5                4.6 +/-    0.56       5.0 +/-    0.56  0.030 / 0.030
G23     311.4          41.0                3.2 +/-    0.87       4.6 +/-    0.87  0.080 / 0.080
G26     84.4           54.0                5.1 +/-    1.04       6.1 +/-    1.04  0.060 / 0.060
G31     47.9           26.5                1.7 +/-    2.15       3.2 +/-    2.15  0.040 / 0.060