PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-14:28:10
G02     213.5          50.5               11.0 +/-    0.79      13.8 +/-    0.79  0.070 / 0.120
G06     72.1           77.1                9.0 +/-    0.26       9.2 +/-    0.26  0.080 / 0.110
G12     317.8          34.9                6.7 +/-    1.74      10.7 +/-    1.74  0.120 / 0.230
G17     54.1           34.3                8.0 +/-    0.97      12.8 +/-    0.97  0.120 / 0.230
G19     26.6           55.8                8.3 +/-    1.68       9.8 +/-    1.68  0.050 / 0.050
G24     269.0          43.1                8.6 +/-    0.88      12.0 +/-    0.88  0.050 / 0.050
G28     118.9          18.1                8.7 +/-    1.10      20.0 +/-    1.10  0.020 / 0.020