PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-08:13:10
G07     326.1          55.4                3.6 +/-    0.90       4.3 +/-    0.90  0.030 / 0.050
G08     105.0          49.8                7.7 +/-    0.96       9.7 +/-    0.96  0.040 / 0.060
G09     183.6          75.6                4.4 +/-    0.71       4.6 +/-    0.71  0.080 / 0.140
G11     148.1          10.4               -4.8 +/-   15.51     -13.3 +/-   15.51  0.080 / 0.120
G23     153.9          48.2                7.8 +/-    0.91      10.1 +/-    0.91  0.040 / 0.070
G27     61.5           34.8                3.6 +/-    0.73       5.8 +/-    0.73  0.040 / 0.070
G28     233.0          24.4                5.3 +/-    2.29      10.5 +/-    2.29  0.030 / 0.060
G30     296.9          30.3                4.8 +/-    1.72       8.3 +/-    1.72  0.030 / 0.060