PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-17:58:10
G01     313.0          27.7                5.4 +/-    1.27      10.0 +/-    1.27  0.080 / 0.150
G10     96.9           46.0                7.8 +/-    1.07      10.4 +/-    1.07  0.080 / 0.200
G11     292.2          26.6                6.9 +/-    1.86      13.0 +/-    1.86  0.160 / 0.270
G14     334.9          69.9                5.3 +/-    0.41       5.6 +/-    0.41  0.200 / 0.330
G18     112.5          18.2                7.8 +/-    1.51      18.0 +/-    1.51  0.070 / 0.130
G22     306.6          19.8                5.5 +/-    1.21      12.1 +/-    1.21  0.090 / 0.130
G25     90.1           14.0                9.0 +/-    2.41      22.9 +/-    2.41  0.030 / 0.030
G31     172.7          55.8                7.8 +/-    0.58       9.2 +/-    0.58  0.030 / 0.030
G32     26.9           58.2                5.1 +/-    0.93       5.9 +/-    0.93  0.050 / 0.030