PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-10:13:00
G07     24.4           68.4                4.9 +/-    1.14       5.2 +/-    1.14  0.050 / 0.050
G08     68.1           51.3                5.2 +/-    1.39       6.4 +/-    1.39  0.070 / 0.070
G09     179.7          50.3                7.2 +/-    1.04       9.1 +/-    1.04  0.030 / 0.040
G11     130.9          28.3                4.7 +/-    2.74       8.6 +/-    2.74  0.030 / 0.030
G18     113.8          10.2               -3.0 +/-   20.94      -8.2 +/-   20.94  0.220 / 0.340
G23     159.0          17.0                5.2 +/-    0.67      12.4 +/-    0.67  0.210 / 0.220
G27     40.8           17.8                3.8 +/-    2.83       8.9 +/-    2.83  0.040 / 0.040
G28     254.3          39.5                6.3 +/-    1.83       9.2 +/-    1.83  0.050 / 0.050
G30     319.9          50.7                4.2 +/-    0.97       5.2 +/-    0.97  0.220 / 0.260