PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-10:12:50
G01     58.0           29.2                3.4 +/-    1.10       6.0 +/-    1.10  0.150 / 0.170
G07     142.0          20.2                3.7 +/-    1.72       8.0 +/-    1.72  0.130 / 0.230
G11     48.2           25.1                3.5 +/-    1.85       6.9 +/-    1.85  0.020 / 0.030
G13     260.2          36.0                6.9 +/-    2.03      10.8 +/-    2.03  0.030 / 0.030
G15     293.4          16.1                3.5 +/-    1.94       8.4 +/-    1.94  0.090 / 0.090
G17     255.1          75.3                6.0 +/-    0.52       6.2 +/-    0.52  0.090 / 0.080
G18     41.3           12.1                3.0 +/-    1.64       8.1 +/-    1.64  0.180 / 0.300
G19     232.6          53.4                6.8 +/-    2.34       8.2 +/-    2.34  0.150 / 0.320
G28     23.8           59.8                5.2 +/-    1.14       5.9 +/-    1.14  0.040 / 0.030
G30     144.7          53.6                6.0 +/-    0.75       7.3 +/-    0.75  0.040 / 0.050