PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-04:42:50
G10     264.3          37.6                7.7 +/-    1.64      11.7 +/-    1.64  0.150 / 0.190
G13     43.0           19.6                5.8 +/-    2.77      12.9 +/-    2.77  0.150 / 0.230
G15     61.2           49.6                6.6 +/-    1.47       8.4 +/-    1.47  0.040 / 0.040
G16     284.7          12.8                6.6 +/-    2.13      17.2 +/-    2.13  0.040 / 0.040
G20     292.8          59.1                7.4 +/-    1.11       8.4 +/-    1.11  0.080 / 0.110
G21     359.6          70.4                7.2 +/-    1.19       7.6 +/-    1.19  0.060 / 0.060
G24     122.3          12.7                8.2 +/-    1.86      21.7 +/-    1.86  0.100 / 0.250
G27     320.4          15.4                6.7 +/-    1.32      16.6 +/-    1.32  0.170 / 0.420
G29     165.3          31.2                6.9 +/-    1.27      11.7 +/-    1.27  0.130 / 0.330