PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-09:27:50
G01     109.3          23.0                5.0 +/-    1.00      10.2 +/-    1.00  0.040 / 0.040
G07     102.0          59.1                6.3 +/-    1.11       7.2 +/-    1.11  0.040 / 0.040
G08     42.9           26.5                2.8 +/-    2.35       5.3 +/-    2.35  0.080 / 0.150
G09     175.1          17.1                3.4 +/-    2.02       8.0 +/-    2.02  0.120 / 0.130
G11     95.8           43.8                6.7 +/-    1.01       9.2 +/-    1.01  0.130 / 0.220
G13     311.9          27.4                3.6 +/-    1.80       6.6 +/-    1.80  0.180 / 0.290
G17     204.2          31.2                4.3 +/-    0.98       7.4 +/-    0.98  0.150 / 0.170
G18     83.8           23.6                3.6 +/-    1.32       7.3 +/-    1.32  0.160 / 0.170
G28     297.6          56.5                4.3 +/-    1.31       5.0 +/-    1.31  0.080 / 0.210
G30     2.7            75.3                5.5 +/-    0.66       5.7 +/-    0.66  0.080 / 0.180