PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-01:13:00
G10     262.8          35.6               16.6 +/-    1.28      26.1 +/-    1.28  0.150 / 0.220
G13     44.0           21.3                9.6 +/-    1.68      20.5 +/-    1.68  0.140 / 0.160
G15     66.2           53.6               11.6 +/-    1.00      14.0 +/-    1.00  0.060 / 0.030
G16     281.5          13.5               12.9 +/-    2.50      33.3 +/-    2.50  0.050 / 0.030
G20     275.2          45.7               11.3 +/-    1.19      15.1 +/-    1.19  0.070 / 0.200
G21     351.7          68.7               11.9 +/-    0.82      12.7 +/-    0.82  0.080 / 0.290
G24     122.6          11.9               13.4 +/-    2.24      35.7 +/-    2.24  0.190 / 0.330
G27     320.3          15.6               10.2 +/-    1.78      25.0 +/-    1.78  0.220 / 0.380
G29     167.9          36.5               14.6 +/-    1.60      22.5 +/-    1.60  0.100 / 0.370