PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-12:12:50
G01     318.8          19.3                2.7 +/-    1.76       6.0 +/-    1.76  0.140 / 0.180
G08     255.5          12.9                4.4 +/-    2.56      11.5 +/-    2.56  0.110 / 0.210
G10     81.8           51.7                3.9 +/-    1.11       4.9 +/-    1.11  0.040 / 0.050
G11     301.3          24.1                1.5 +/-    1.47       3.0 +/-    1.47  0.030 / 0.030
G14     302.3          71.5                3.3 +/-    0.61       3.5 +/-    0.61  0.030 / 0.020
G18     301.8          43.6                4.4 +/-    2.81       6.1 +/-    2.81  0.040 / 0.020
G20     106.4          28.1                5.3 +/-    1.18       9.7 +/-    1.18  0.130 / 0.240
G22     302.3          14.3                1.6 +/-    1.30       4.0 +/-    1.30  0.120 / 0.280
G31     177.5          41.3                4.9 +/-    0.94       6.9 +/-    0.94  0.050 / 0.040
G32     357.9          69.3                3.7 +/-    0.91       4.0 +/-    0.91  0.050 / 0.040