PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-13:58:10
G01     117.4          18.9                8.0 +/-   22.87      18.1 +/-   22.87  0.130 / 0.410
G07     89.0           62.6                7.0 +/-    2.33       7.8 +/-    2.33  0.080 / 0.130
G08     44.0           28.3                8.6 +/-   21.29      15.6 +/-   21.29  0.030 / 0.030
G09     175.4          22.9               11.7 +/-   23.65      24.0 +/-   23.65  0.040 / 0.030
G11     101.4          38.8               10.8 +/-   15.39      16.0 +/-   15.39  0.120 / 0.330
G13     317.9          18.9                8.8 +/-   24.12      19.8 +/-   24.12  0.090 / 0.210
G17     201.4          28.6               11.2 +/-   18.70      20.2 +/-   18.70  0.040 / 0.250
G28     296.0          57.8               -0.3 +/-   29.71      -0.3 +/-   29.71  0.030 / 0.020
G30     345.0          67.9                4.6 +/-    9.58       4.9 +/-    9.58  0.130 / 0.340