PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-11:27:50
G01     128.3          10.6               -8.7 +/-   30.68     -23.8 +/-   30.68  0.030 / 0.030
G07     48.0           69.6                3.6 +/-    0.46       3.8 +/-    0.46  0.040 / 0.030
G08     50.7           39.2                3.0 +/-    1.16       4.5 +/-    1.16  0.030 / 0.030
G09     176.4          35.6                4.2 +/-    0.91       6.6 +/-    0.91  0.030 / 0.030
G11     118.6          34.5                5.4 +/-    1.44       8.6 +/-    1.44  0.230 / 0.310
G13     321.4          10.5               -6.7 +/-    9.43     -18.3 +/-    9.43  0.180 / 0.320
G17     199.2          14.4                2.4 +/-    4.63       6.0 +/-    4.63  0.140 / 0.000
G18     104.7          15.8                2.8 +/-    1.44       6.7 +/-    1.44  0.230 / 0.430
G28     273.4          51.8                5.0 +/-    2.69       6.1 +/-    2.69  0.110 / 0.230
G30     329.2          57.9                3.0 +/-    0.32       3.4 +/-    0.32  0.160 / 0.220