PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/18-01:57:50
G01     251.8          35.6                3.5 +/-    1.12       5.5 +/-    1.12  0.040 / 0.040
G03     316.0          41.2                5.0 +/-    1.46       7.1 +/-    1.46  0.030 / 0.060
G11     236.8          13.3                5.5 +/-    1.81      14.1 +/-    1.81  0.150 / 0.470
G14     60.5           40.2                3.8 +/-    0.69       5.6 +/-    0.69  0.120 / 0.370
G16     166.8          15.1               -0.9 +/-   15.76      -2.1 +/-   15.76  0.050 / 0.090
G22     306.3          64.4                3.3 +/-    0.99       3.6 +/-    0.99  0.070 / 0.110
G23     285.4          17.5                4.0 +/-    1.69       9.2 +/-    1.69  0.020 / 0.040
G26     142.6          35.5                7.3 +/-    1.33      11.4 +/-    1.33  0.020 / 0.050
G31     40.0           63.7                2.7 +/-    0.31       3.0 +/-    0.31  0.060 / 0.100
G32     75.3           25.9                4.1 +/-    1.23       7.8 +/-    1.23  0.060 / 0.110