PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-18:42:30
G05     52.5           10.3                9.9 +/-    1.87      27.4 +/-    1.87  0.110 / 0.270
G10     243.5          22.2               12.6 +/-    0.72      26.3 +/-    0.72  0.090 / 0.310
G13     61.6           32.7               10.7 +/-    0.71      17.8 +/-    0.71  0.040 / 0.070
G15     104.5          57.4               12.5 +/-    0.46      14.6 +/-    0.46  0.060 / 0.070
G16     303.7          15.5                7.2 +/-    3.28      17.8 +/-    3.28  0.050 / 0.130
G20     260.2          46.1               11.8 +/-    1.14      15.7 +/-    1.14  0.060 / 0.130
G21     323.8          53.4               12.6 +/-    0.82      15.2 +/-    0.82  0.140 / 0.830
G26     276.5          18.3               10.2 +/-    1.52      23.4 +/-    1.52  0.140 / 0.660
G29     160.4          60.8               14.1 +/-    1.13      15.9 +/-    1.13  0.020 / 0.040