PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-05:28:10
G01     84.5           31.5                5.5 +/-    0.96       9.3 +/-    0.96  0.030 / 0.030
G07     127.5          43.1                7.4 +/-    1.51      10.3 +/-    1.51  0.030 / 0.030
G11     68.0           41.9                5.3 +/-    0.37       7.4 +/-    0.37  0.080 / 0.230
G13     290.3          38.1                4.1 +/-    1.45       6.2 +/-    1.45  0.120 / 0.260
G15     311.7          12.4                2.3 +/-    1.84       5.9 +/-    1.84  0.050 / 0.110
G17     215.0          56.4                5.8 +/-    1.42       6.9 +/-    1.42  0.060 / 0.110
G19     214.6          31.8                5.4 +/-    2.51       9.1 +/-    2.51  0.050 / 0.060
G28     335.8          61.1                3.3 +/-    0.77       3.7 +/-    0.77  0.050 / 0.070
G30     107.1          78.0                5.6 +/-    0.69       5.7 +/-    0.69  0.040 / 0.070