PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-09:27:40
G10     292.8          50.7                5.7 +/-    2.52       7.2 +/-    2.52  0.040 / 0.040
G15     46.6           30.4                3.0 +/-    1.19       5.1 +/-    1.19  0.040 / 0.030
G20     344.2          65.4                5.1 +/-    0.93       5.5 +/-    0.93  0.110 / 0.170
G21     91.1           73.2                5.7 +/-    0.47       5.9 +/-    0.47  0.100 / 0.160
G24     99.6           24.9                6.2 +/-    1.29      12.1 +/-    1.29  0.090 / 0.080
G27     306.1          31.1                5.9 +/-    0.85      10.2 +/-    0.85  0.100 / 0.120
G32     209.8          24.2                7.1 +/-    1.45      14.2 +/-    1.45  0.120 / 0.120