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               11.4 +/-    0.92      14.2 +/-    0.92  0.060 / 0.060
G06     72.1           77.1                8.1 +/-    0.76       8.2 +/-    0.76  0.060 / 0.060
G12     317.8          34.9                6.3 +/-    1.02      10.0 +/-    1.02  0.030 / 0.030
G17     54.1           34.3                7.0 +/-    0.71      11.3 +/-    0.71  0.030 / 0.030
G19     26.6           55.8                7.8 +/-    0.60       9.2 +/-    0.60  0.070 / 0.090
G24     269.0          43.1                8.4 +/-    0.97      11.7 +/-    0.97  0.040 / 0.100
G28     118.9          18.1                9.2 +/-    0.95      21.1 +/-    0.95  0.170 / 0.330