PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/05-21:43:00
G10     262.3          35.5               13.3 +/-    0.57      20.8 +/-    0.57  0.130 / 0.220
G13     44.2           21.5                9.7 +/-    1.86      20.5 +/-    1.86  0.140 / 0.240
G15     70.4           56.5               10.2 +/-    0.41      12.0 +/-    0.41  0.120 / 0.430
G16     282.5          13.6                9.7 +/-    2.02      25.0 +/-    2.02  0.150 / 0.560
G20     289.1          58.1                8.7 +/-    1.31      10.0 +/-    1.31  0.270 / 0.330
G21     352.5          68.7                9.6 +/-    0.80      10.2 +/-    0.80  0.280 / 0.370
G24     122.0          11.8               12.9 +/-    2.68      34.6 +/-    2.68  0.050 / 0.040
G27     320.8          14.5                8.3 +/-    1.60      20.9 +/-    1.60  0.050 / 0.030
G29     167.6          36.7               12.8 +/-    1.14      19.7 +/-    1.14  0.090 / 0.220