PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-22:28:10
G08     313.8          17.0               10.3 +/-    1.96      24.4 +/-    1.96  0.090 / 0.090
G10     320.8          58.0               10.1 +/-    0.83      11.7 +/-    0.83  0.060 / 0.080
G14     215.1          24.2               15.4 +/-    1.09      30.6 +/-    1.09  0.030 / 0.060
G15     46.0           20.6                8.2 +/-    0.43      17.7 +/-    0.43  0.040 / 0.050
G20     25.0           62.7               10.9 +/-    0.55      12.1 +/-    0.55  0.120 / 0.340
G21     126.9          63.0               13.1 +/-    0.75      14.6 +/-    0.75  0.140 / 0.410
G24     78.6           29.1               10.4 +/-    0.58      18.6 +/-    0.58  0.080 / 0.120
G27     284.4          37.3               12.8 +/-    0.58      19.5 +/-    0.58  0.080 / 0.130
G32     218.1          47.2               14.7 +/-    1.57      19.2 +/-    1.57  0.110 / 0.270