PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/30-14:42:20
G02     204.9          33.3                8.7 +/-    2.11      14.3 +/-    2.11  0.090 / 0.130
G06     148.6          72.3                8.2 +/-    0.62       8.6 +/-    0.62  0.100 / 0.070
G12     310.1          21.5                5.3 +/-    2.47      11.3 +/-    2.47  0.140 / 0.260
G17     39.5           46.1                6.6 +/-    1.57       8.8 +/-    1.57  0.190 / 0.260
G19     355.6          65.8                6.9 +/-    0.42       7.5 +/-    0.42  0.030 / 0.030
G24     294.0          40.3                3.7 +/-    9.07       5.4 +/-    9.07  0.040 / 0.030
G28     104.0          30.2                6.9 +/-    0.83      12.1 +/-    0.83  0.030 / 0.030