PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-01:58:00
G07     34.8           69.4                4.3 +/-    0.51       4.5 +/-    0.51  0.050 / 0.080
G08     56.1           44.6                2.0 +/-    0.92       2.8 +/-    0.92  0.060 / 0.080
G09     179.7          43.3                6.8 +/-    1.79       9.4 +/-    1.79  0.210 / 0.230
G11     125.8          31.0                5.2 +/-    0.97       9.0 +/-    0.97  0.030 / 0.060
G23     160.5          13.1                5.0 +/-    3.12      13.1 +/-    3.12  0.020 / 0.040
G27     38.0           11.1                2.8 +/-    1.10       7.5 +/-    1.10  0.020 / 0.030
G28     268.5          50.2                3.0 +/-    0.76       3.8 +/-    0.76  0.130 / 0.300
G30     330.2          58.1                1.2 +/-    0.47       1.4 +/-    0.47  0.170 / 0.360