PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-21:58:10
G10     294.2          50.3               12.4 +/-    3.14      15.6 +/-    3.14  0.130 / 0.080
G14     209.7          11.8                4.9 +/-   36.56      13.1 +/-   36.56  0.120 / 0.100
G15     46.4           29.7               12.6 +/-    1.47      22.2 +/-    1.47  0.040 / 0.030
G18     355.1          66.3               13.3 +/-    0.49      14.4 +/-    0.49  0.040 / 0.040
G20     70.3           19.0               11.5 +/-    1.12      26.0 +/-    1.12  0.070 / 0.110
G21     94.9           73.4               15.8 +/-    0.70      16.4 +/-    0.70  0.090 / 0.150
G24     100.8          25.9               14.7 +/-    1.10      28.2 +/-    1.10  0.050 / 0.080
G27     300.5          34.5               12.6 +/-    0.94      20.3 +/-    0.94  0.050 / 0.080
G32     210.9          27.4               17.2 +/-    1.36      32.0 +/-    1.36  0.070 / 0.170