PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-08:42:50
G02     223.8          66.9                6.6 +/-    1.21       7.1 +/-    1.21  0.080 / 0.090
G06     46.3           69.5                5.3 +/-    0.82       5.6 +/-    0.82  0.080 / 0.070
G12     320.2          42.2                5.8 +/-    1.16       8.2 +/-    1.16  0.040 / 0.050
G17     64.6           25.6                3.9 +/-    1.15       7.5 +/-    1.15  0.040 / 0.050
G19     44.9           46.3                4.2 +/-    0.53       5.5 +/-    0.53  0.030 / 0.030
G24     250.0          39.5                7.5 +/-    1.83      11.0 +/-    1.83  0.030 / 0.030
G28     126.6          10.1                9.1 +/-    3.42      25.4 +/-    3.42  0.170 / 0.420