PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-10:27:50
G07     332.5          57.8                4.7 +/-    0.82       5.4 +/-    0.82  0.080 / 0.090
G08     96.8           51.3                7.4 +/-    0.54       9.2 +/-    0.54  0.080 / 0.110
G09     184.6          72.0                6.6 +/-    0.68       6.9 +/-    0.68  0.040 / 0.040
G11     145.0          13.4                3.4 +/-    0.57       8.9 +/-    0.57  0.040 / 0.040
G23     155.6          42.3                5.3 +/-    1.03       7.4 +/-    1.03  0.060 / 0.130
G27     55.7           32.1                3.4 +/-    1.00       5.8 +/-    1.00  0.060 / 0.070
G28     236.9          29.0                7.3 +/-    1.23      13.1 +/-    1.23  0.050 / 0.060
G30     300.9          33.5                4.5 +/-    0.86       7.4 +/-    0.86  0.050 / 0.060