PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-19:28:10
G01     239.1          28.0               10.7 +/-    1.95      19.5 +/-    1.95  0.040 / 0.030
G03     310.0          57.1                9.9 +/-    1.72      11.5 +/-    1.72  0.050 / 0.040
G14     71.7           34.4                8.8 +/-    0.56      14.1 +/-    0.56  0.070 / 0.090
G16     158.6          28.7               12.1 +/-    1.25      21.8 +/-    1.25  0.070 / 0.100
G22     274.5          75.1               11.2 +/-    0.70      11.5 +/-    0.70  0.090 / 0.130
G23     295.8          27.2                9.0 +/-    2.48      16.8 +/-    2.48  0.100 / 0.150
G26     123.4          47.1               13.5 +/-    0.93      17.7 +/-    0.93  0.060 / 0.040
G31     40.7           46.7                7.8 +/-    0.68      10.3 +/-    0.68  0.070 / 0.050
G32     87.3           15.4               10.4 +/-    3.46      25.5 +/-    3.46  0.070 / 0.120