PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-20:57:50
G08     318.9          12.5               10.4 +/-    2.45      27.5 +/-    2.45  0.040 / 0.040
G10     316.9          57.6               11.7 +/-    1.06      13.6 +/-    1.06  0.040 / 0.040
G14     213.5          18.9               15.1 +/-    5.32      34.1 +/-    5.32  0.430 / 0.600
G15     45.7           18.5                9.4 +/-    2.47      21.5 +/-    2.47  0.410 / 0.650
G20     20.3           63.1               12.5 +/-    1.11      13.9 +/-    1.11  0.090 / 0.230
G21     121.0          66.9               14.4 +/-    0.54      15.5 +/-    0.54  0.120 / 0.230
G24     87.2           29.9               11.4 +/-    1.23      20.0 +/-    1.23  0.060 / 0.060
G27     288.2          37.6               10.0 +/-    1.34      15.1 +/-    1.34  0.080 / 0.060
G32     215.3          43.1               15.1 +/-    0.96      20.9 +/-    0.96  0.050 / 0.070