PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-18:12:50
G01     293.0          39.5                6.7 +/-    1.58       9.9 +/-    1.58  0.050 / 0.090
G03     311.7          17.2                7.4 +/-    1.63      17.5 +/-    1.63  0.050 / 0.080
G10     118.4          30.5               10.3 +/-    0.84      17.9 +/-    0.84  0.070 / 0.120
G11     269.0          26.3                7.9 +/-    1.65      15.0 +/-    1.65  0.070 / 0.110
G14     20.3           60.2                7.8 +/-    0.57       8.8 +/-    0.57  0.050 / 0.090
G22     313.5          37.4                8.2 +/-    0.73      12.4 +/-    0.73  0.040 / 0.080
G25     68.9           19.0                9.6 +/-    0.69      21.7 +/-    0.69  0.020 / 0.030
G26     157.8          11.9               11.8 +/-    2.87      31.5 +/-    2.87  0.030 / 0.020
G31     138.1          78.0                9.1 +/-    0.75       9.3 +/-    0.75  0.040 / 0.050
G32     49.6           43.0                7.6 +/-    0.22      10.5 +/-    0.22  0.040 / 0.060