PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-12:12:50
G01     119.4          17.6                5.2 +/-    1.31      12.1 +/-    1.31  0.030 / 0.030
G07     79.7           66.6                6.5 +/-    0.40       7.0 +/-    0.40  0.030 / 0.030
G08     44.6           30.3                4.6 +/-    1.19       8.0 +/-    1.19  0.020 / 0.030
G09     175.5          24.4                5.5 +/-    1.73      10.8 +/-    1.73  0.030 / 0.030
G11     105.9          39.8                6.5 +/-    0.88       9.5 +/-    0.88  0.090 / 0.330
G13     317.8          19.4                2.2 +/-    1.30       4.9 +/-    1.30  0.190 / 0.210
G17     201.2          25.1                5.7 +/-    2.41      11.1 +/-    2.41  0.120 / 0.170
G18     94.1           20.6                4.9 +/-    1.47      10.6 +/-    1.47  0.120 / 0.140
G28     291.6          57.1                5.1 +/-    1.40       5.9 +/-    1.40  0.120 / 0.160
G30     343.0          67.3                5.2 +/-    0.61       5.5 +/-    0.61  0.120 / 0.210