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                4.0 +/-    1.15       8.2 +/-    1.15  0.030 / 0.040
G07     102.0          59.1                5.4 +/-    0.48       6.2 +/-    0.48  0.030 / 0.050
G08     42.9           26.5                2.5 +/-    0.91       4.7 +/-    0.91  0.040 / 0.060
G09     175.1          17.1                4.6 +/-    2.60      10.9 +/-    2.60  0.040 / 0.070
G11     95.8           43.8                5.3 +/-    0.56       7.2 +/-    0.56  0.050 / 0.110
G13     311.9          27.4                4.4 +/-    1.95       8.1 +/-    1.95  0.050 / 0.110
G17     204.2          31.2                3.8 +/-    1.26       6.5 +/-    1.26  0.090 / 0.190
G18     83.8           23.6                2.6 +/-    0.93       5.3 +/-    0.93  0.130 / 0.170
G28     297.6          56.5                3.0 +/-    0.77       3.5 +/-    0.77  0.070 / 0.160
G30     2.7            75.3                5.0 +/-    0.78       5.1 +/-    0.78  0.060 / 0.190