PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-04:42:40
G10     263.3          35.8                9.3 +/-    1.30      14.5 +/-    1.30  0.090 / 0.270
G13     43.8           21.1                5.7 +/-    2.50      12.3 +/-    2.50  0.110 / 0.280
G15     63.5           51.5                5.2 +/-    1.13       6.4 +/-    1.13  0.050 / 0.030
G16     281.4          13.2                7.7 +/-    1.76      20.1 +/-    1.76  0.050 / 0.040
G20     321.0          67.8                5.8 +/-    0.37       6.2 +/-    0.37  0.290 / 0.230
G21     353.7          69.3                5.5 +/-    0.70       5.9 +/-    0.70  0.260 / 0.280
G24     122.8          12.2                5.3 +/-    1.95      14.2 +/-    1.95  0.100 / 0.240
G27     319.9          16.4                7.2 +/-    3.30      17.3 +/-    3.30  0.100 / 0.280
G29     167.9          35.5                6.4 +/-    0.97      10.1 +/-    0.97  0.260 / 0.320