PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-12:12:50
G01     258.6          39.1                6.9 +/-    1.47      10.2 +/-    1.47  0.080 / 0.080
G11     242.0          15.2                5.2 +/-    1.32      12.8 +/-    1.32  0.060 / 0.090
G14     53.3           44.4                3.3 +/-    1.27       4.4 +/-    1.27  0.210 / 0.630
G18     223.7          32.1                4.8 +/-    2.52       8.1 +/-    2.52  0.260 / 0.430
G22     309.8          64.9                4.5 +/-    0.62       4.9 +/-    0.62  0.070 / 0.090
G23     281.5          15.5               -1.3 +/-    4.49      -3.3 +/-    4.49  0.050 / 0.090
G25     44.7           12.9                2.1 +/-    3.40       5.5 +/-    3.40  0.040 / 0.090
G26     145.0          31.1                6.0 +/-    0.98      10.3 +/-    0.98  0.050 / 0.070
G31     44.9           66.4                2.3 +/-    0.53       2.5 +/-    0.53  0.040 / 0.040
G32     68.5           31.4                2.5 +/-    2.39       4.2 +/-    2.39  0.040 / 0.050