PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-12:27:50
G01     318.4          20.2                2.4 +/-    1.77       5.3 +/-    1.77  0.160 / 0.240
G08     254.4          12.2                5.7 +/-    1.42      15.2 +/-    1.42  0.210 / 0.160
G10     83.6           51.0                3.8 +/-    0.91       4.7 +/-    0.91  0.040 / 0.030
G11     300.1          24.6                3.3 +/-    1.65       6.6 +/-    1.65  0.030 / 0.040
G14     306.4          71.6                3.7 +/-    0.91       3.8 +/-    0.91  0.110 / 0.130
G18     300.4          44.5                5.5 +/-    2.51       7.5 +/-    2.51  0.110 / 0.110
G20     107.4          27.2                4.6 +/-    1.29       8.5 +/-    1.29  0.030 / 0.020
G22     302.9          15.0                2.2 +/-    2.28       5.6 +/-    2.28  0.030 / 0.030
G31     177.3          42.5                6.4 +/-    1.54       9.0 +/-    1.54  0.110 / 0.240
G32     1.1            68.5                3.5 +/-    0.79       3.7 +/-    0.79  0.140 / 0.230