PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-01:28:10
G01     221.8          12.6                3.9 +/-    3.57      10.3 +/-    3.57  0.030 / 0.030
G03     271.5          69.1                3.3 +/-    0.55       3.5 +/-    0.55  0.030 / 0.030
G09     298.0          11.9               -4.1 +/-   21.31     -10.9 +/-   21.31  0.110 / 0.370
G14     92.6           19.5                5.6 +/-    1.92      12.4 +/-    1.92  0.140 / 0.200
G16     149.6          48.4                6.3 +/-    0.67       8.1 +/-    0.67  0.040 / 0.050
G22     206.7          65.8                3.7 +/-    0.46       4.0 +/-    0.46  0.040 / 0.060
G23     311.2          40.7                3.0 +/-    0.93       4.4 +/-    0.93  0.060 / 0.080
G26     91.5           56.2                3.3 +/-    1.20       3.9 +/-    1.20  0.040 / 0.090
G31     46.5           30.4                1.9 +/-    1.04       3.3 +/-    1.04  0.130 / 0.220