PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-11:12:50
G01     320.2          15.2                3.1 +/-    2.91       7.6 +/-    2.91  0.100 / 0.290
G08     260.1          15.3                5.2 +/-    1.83      12.9 +/-    1.83  0.110 / 0.260
G10     74.3           54.3                6.1 +/-    0.85       7.3 +/-    0.85  0.040 / 0.030
G11     305.7          21.8                5.2 +/-    1.19      11.0 +/-    1.19  0.040 / 0.020
G14     286.4          70.4                5.3 +/-    1.12       5.6 +/-    1.12  0.020 / 0.020
G18     306.7          39.8                5.7 +/-    1.30       8.3 +/-    1.30  0.020 / 0.020
G20     102.1          31.6                4.7 +/-    0.69       8.0 +/-    0.69  0.040 / 0.040
G27     228.4          12.0                3.7 +/-    1.74       9.8 +/-    1.74  0.040 / 0.040
G31     178.0          36.3                7.3 +/-    1.72      11.2 +/-    1.72  0.160 / 0.330
G32     342.8          72.1                6.8 +/-    0.71       7.1 +/-    0.71  0.130 / 0.230