PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-10:27:50
G01     62.7           30.8                2.9 +/-    0.92       5.0 +/-    0.92  0.050 / 0.060
G07     140.0          24.1                4.5 +/-    1.35       9.0 +/-    1.35  0.040 / 0.050
G11     50.4           28.4                1.6 +/-    0.52       2.8 +/-    0.52  0.170 / 0.430
G13     265.7          37.4                6.9 +/-    1.65      10.5 +/-    1.65  0.120 / 0.290
G15     297.9          15.7                2.9 +/-    3.05       7.1 +/-    3.05  0.030 / 0.040
G17     241.9          71.7                7.5 +/-    0.61       7.9 +/-    0.61  0.030 / 0.040
G18     44.1           14.8                2.0 +/-    1.91       5.1 +/-    1.91  0.050 / 0.130
G19     228.1          49.3                7.5 +/-    0.85       9.6 +/-    0.85  0.080 / 0.110
G28     15.8           60.5                5.3 +/-    0.87       6.0 +/-    0.87  0.050 / 0.060
G30     141.4          57.9                5.5 +/-    0.70       6.4 +/-    0.70  0.050 / 0.070