PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-19:58:20
G01     250.7          35.6                9.0 +/-    1.10      14.2 +/-    1.10  0.070 / 0.140
G03     316.1          44.0                7.1 +/-    2.14       9.8 +/-    2.14  0.060 / 0.120
G11     235.8          11.6                9.2 +/-    2.88      24.8 +/-    2.88  0.060 / 0.100
G14     60.8           40.1                8.6 +/-    0.66      12.5 +/-    0.66  0.060 / 0.090
G18     216.9          26.0                9.9 +/-    1.89      18.9 +/-    1.89  0.110 / 0.500
G22     304.3          66.2                7.7 +/-    0.74       8.4 +/-    0.74  0.110 / 0.390
G23     285.9          17.7                9.5 +/-    2.38      22.1 +/-    2.38  0.060 / 0.100
G26     140.0          37.0               11.8 +/-    0.76      18.1 +/-    0.76  0.060 / 0.090
G31     40.4           63.5                8.4 +/-    0.84       9.3 +/-    0.84  0.030 / 0.050
G32     76.6           24.0                8.8 +/-    0.83      17.6 +/-    0.83  0.040 / 0.040