PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-13:12:50
G01     266.1          40.1                6.7 +/-    0.83       9.7 +/-    0.83  0.050 / 0.060
G03     316.5          35.6                5.3 +/-    1.20       8.3 +/-    1.20  0.050 / 0.060
G10     131.8          14.2                7.4 +/-    2.52      18.7 +/-    2.52  0.200 / 0.110
G11     249.2          18.6                5.6 +/-    2.04      12.7 +/-    2.04  0.220 / 0.100
G14     43.7           50.6                5.6 +/-    0.84       7.1 +/-    0.84  0.100 / 0.200
G18     231.9          36.8                7.2 +/-    1.25      11.0 +/-    1.25  0.090 / 0.170
G22     313.0          60.2                5.8 +/-    1.10       6.6 +/-    1.10  0.050 / 0.040
G25     49.8           16.1                4.5 +/-    4.42      11.0 +/-    4.42  0.040 / 0.040
G31     48.2           68.4                6.6 +/-    0.53       7.1 +/-    0.53  0.070 / 0.050
G32     68.1           28.9                5.0 +/-    1.33       9.0 +/-    1.33  0.060 / 0.030