PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/08-12:12:40
G01     38.0           11.5                2.3 +/-    1.78       6.2 +/-    1.78  0.080 / 0.170
G06     172.0          44.8                4.9 +/-    1.33       6.7 +/-    1.33  0.070 / 0.150
G13     232.4          19.3                4.2 +/-    1.04       9.5 +/-    1.04  0.040 / 0.080
G15     267.8          10.3                1.1 +/-    3.53       2.9 +/-    3.53  0.040 / 0.080
G17     4.6            68.6                4.4 +/-    0.66       4.7 +/-    0.66  0.040 / 0.030
G19     296.9          72.1                4.4 +/-    0.85       4.6 +/-    0.85  0.040 / 0.030
G24     315.0          21.9               -0.3 +/-    1.07      -0.7 +/-    1.07  0.030 / 0.040
G28     70.8           49.8                3.0 +/-    0.34       3.8 +/-    0.34  0.040 / 0.040
G30     156.1          24.0                4.1 +/-    0.94       8.3 +/-    0.94  0.100 / 0.290