PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-07:42:40
G07     13.3           67.6                4.7 +/-    0.45       5.1 +/-    0.45  0.050 / 0.040
G08     70.9           51.5                5.2 +/-    0.67       6.4 +/-    0.67  0.030 / 0.030
G09     179.0          52.7                7.8 +/-    0.53       9.5 +/-    0.53  0.110 / 0.210
G11     134.2          26.1                3.3 +/-    1.82       6.3 +/-    1.82  0.160 / 0.210
G23     159.2          21.4                3.8 +/-    2.06       8.1 +/-    2.06  0.040 / 0.040
G27     42.1           19.9                4.0 +/-    2.94       8.8 +/-    2.94  0.040 / 0.050
G28     250.8          36.8                6.2 +/-    1.45       9.5 +/-    1.45  0.040 / 0.040
G30     315.9          47.1                4.1 +/-    0.72       5.4 +/-    0.72  0.050 / 0.050