PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-22:12:30
G10     291.7          49.9                8.4 +/-    0.87      10.5 +/-    0.87  0.040 / 0.050
G15     48.2           37.3                6.6 +/-    0.33      10.0 +/-    0.33  0.040 / 0.050
G20     342.3          65.4                7.0 +/-    0.98       7.6 +/-    0.98  0.050 / 0.100
G21     80.7           76.2                8.3 +/-    0.75       8.5 +/-    0.75  0.050 / 0.110
G24     99.3           24.7                7.9 +/-    0.91      15.6 +/-    0.91  0.060 / 0.150
G27     305.4          31.6                8.8 +/-    1.05      14.9 +/-    1.05  0.060 / 0.140
G29     168.5          11.8               12.0 +/-    2.49      32.2 +/-    2.49  0.040 / 0.050
G32     208.7          29.1               12.9 +/-    1.21      22.9 +/-    1.21  0.040 / 0.040