PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/20-02:13:00
G08     321.1          10.5              -15.5 +/-   29.97     -42.6 +/-   29.97  0.070 / 0.080
G10     304.0          53.9               12.0 +/-    1.30      14.4 +/-    1.30  0.070 / 0.070
G14     211.8          13.7               18.0 +/-    3.10      46.3 +/-    3.10  0.090 / 0.560
G15     45.9           26.5                9.0 +/-    0.97      16.9 +/-    0.97  0.130 / 0.650
G20     323.2          61.1               11.1 +/-    0.49      12.5 +/-    0.49  0.030 / 0.040
G21     107.5          72.2               11.0 +/-    1.06      11.5 +/-    1.06  0.030 / 0.050
G24     91.4           27.8               11.7 +/-    0.87      21.5 +/-    0.87  0.050 / 0.040
G27     295.6          35.8               12.3 +/-    0.73      19.3 +/-    0.73  0.040 / 0.040
G32     212.2          38.2               16.2 +/-    1.45      24.3 +/-    1.45  0.100 / 0.190