PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-08:42:50
G10     292.9          50.8                6.4 +/-    2.47       8.0 +/-    2.47  0.040 / 0.030
G15     46.6           30.3                3.6 +/-    1.23       6.2 +/-    1.23  0.040 / 0.030
G20     344.2          65.4                4.9 +/-    1.05       5.3 +/-    1.05  0.120 / 0.090
G21     90.0           73.6                6.5 +/-    0.56       6.7 +/-    0.56  0.110 / 0.060
G24     99.9           24.9                5.8 +/-    1.33      11.4 +/-    1.33  0.180 / 0.150
G27     305.9          31.2                6.1 +/-    0.94      10.4 +/-    0.94  0.090 / 0.180
G32     209.9          23.8                5.6 +/-    1.78      11.3 +/-    1.78  0.070 / 0.100