PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-11:57:40
G01     244.8          31.9                4.3 +/-    5.82       7.3 +/-    5.82  0.070 / 0.080
G03     313.9          51.2                2.4 +/-    0.88       3.0 +/-    0.88  0.080 / 0.080
G14     63.0           41.1                0.8 +/-    6.30       1.1 +/-    6.30  0.040 / 0.030
G16     158.7          24.8                4.6 +/-    1.37       9.0 +/-    1.37  0.040 / 0.030
G18     217.4          23.1                4.5 +/-    7.65       9.3 +/-    7.65  0.050 / 0.060
G22     285.5          75.3                1.5 +/-    5.22       1.6 +/-    5.22  0.050 / 0.060
G23     293.2          26.9                4.6 +/-    0.92       8.5 +/-    0.92  0.090 / 0.230
G26     127.5          43.4              -15.3 +/-   31.94     -21.0 +/-   31.94  0.080 / 0.260
G31     40.9           50.1                2.1 +/-    0.45       2.6 +/-    0.45  0.100 / 0.120
G32     83.1           17.7                1.2 +/-    6.16       2.7 +/-    6.16  0.090 / 0.140