PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/21-11:42:50
G01     272.0          41.9                9.3 +/-    1.88      13.1 +/-    1.88  0.060 / 0.070
G03     316.4          33.4                4.8 +/-    1.79       7.9 +/-    1.79  0.070 / 0.070
G10     128.7          16.9                4.7 +/-    1.05      11.2 +/-    1.05  0.050 / 0.050
G11     250.8          20.1                5.9 +/-    3.38      13.0 +/-    3.38  0.050 / 0.050
G14     42.3           50.4                5.0 +/-    0.64       6.2 +/-    0.64  0.090 / 0.120
G18     232.8          39.7                9.3 +/-    1.42      13.5 +/-    1.42  0.090 / 0.140
G22     314.7          55.3                5.7 +/-    1.43       6.8 +/-    1.43  0.150 / 0.390
G25     53.3           16.5                3.8 +/-    4.71       9.2 +/-    4.71  0.240 / 0.430
G31     61.3           75.8                6.9 +/-    0.40       7.1 +/-    0.40  0.050 / 0.060
G32     59.6           37.6                4.2 +/-    1.02       6.4 +/-    1.02  0.050 / 0.050