PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/04-09:27:50
G01     56.0           28.4                1.4 +/-    0.88       2.5 +/-    0.88  0.040 / 0.060
G07     142.8          18.8                6.3 +/-    1.09      14.3 +/-    1.09  0.050 / 0.050
G11     47.5           23.9                1.7 +/-    1.39       3.5 +/-    1.39  0.080 / 0.260
G13     258.0          35.2                4.9 +/-    1.21       7.8 +/-    1.21  0.070 / 0.260
G15     291.1          16.4                2.2 +/-    1.99       5.2 +/-    1.99  0.060 / 0.150
G17     263.6          76.9                5.3 +/-    0.63       5.4 +/-    0.63  0.080 / 0.140
G18     40.2           10.9                2.6 +/-    3.85       7.1 +/-    3.85  0.230 / 0.490
G19     234.9          55.2                5.7 +/-    0.94       6.7 +/-    0.94  0.220 / 0.670
G28     26.8           59.5                3.0 +/-    0.69       3.4 +/-    0.69  0.050 / 0.110
G30     146.1          52.1                6.1 +/-    1.14       7.4 +/-    1.14  0.050 / 0.110