PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-23:57:30
G10     301.3          53.1               11.1 +/-    1.26      13.5 +/-    1.26  0.060 / 0.070
G14     211.0          13.1               12.0 +/-   15.38      31.2 +/-   15.38  0.080 / 0.090
G15     46.2           29.3                8.9 +/-    1.22      15.7 +/-    1.22  0.030 / 0.030
G20     295.5          46.6                8.0 +/-    0.61      10.6 +/-    0.61  0.030 / 0.030
G21     102.0          73.6               11.8 +/-    0.75      12.2 +/-    0.75  0.120 / 0.500
G24     92.9           27.1               11.4 +/-    1.48      21.1 +/-    1.48  0.110 / 0.660
G27     298.0          35.1               12.1 +/-    2.27      19.2 +/-    2.27  0.130 / 0.130
G32     211.3          36.3               13.8 +/-    1.43      21.5 +/-    1.43  0.150 / 0.140