PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/26-10:13:10
G07     15.4           68.0                3.0 +/-    0.82       3.2 +/-    0.82  0.040 / 0.050
G08     61.4           46.4                2.9 +/-    0.80       3.9 +/-    0.80  0.040 / 0.040
G09     177.0          47.4                4.9 +/-    1.03       6.4 +/-    1.03  0.030 / 0.030
G11     128.9          27.6                2.8 +/-    1.05       5.2 +/-    1.05  0.030 / 0.040
G18     114.3          10.0               -5.8 +/-   17.26     -16.2 +/-   17.26  0.080 / 0.190
G23     160.6          20.9                3.1 +/-    1.28       6.8 +/-    1.28  0.120 / 0.190
G27     40.8           17.8                2.8 +/-    1.71       6.5 +/-    1.71  0.250 / 0.220
G28     258.1          44.9                3.9 +/-    3.40       5.3 +/-    3.40  0.150 / 0.260
G30     318.3          48.6                1.6 +/-    0.71       2.1 +/-    0.71  0.200 / 0.360