PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/17-00:28:00
G08     289.0          23.5               12.2 +/-    1.00      24.7 +/-    1.00  0.030 / 0.030
G10     11.1           63.2               13.4 +/-    0.47      14.8 +/-    0.47  0.030 / 0.030
G14     233.0          50.4               13.6 +/-    2.46      17.1 +/-    2.46  0.050 / 0.080
G18     66.5           50.0               13.9 +/-    0.94      17.5 +/-    0.94  0.040 / 0.080
G21     147.1          36.4               13.1 +/-    0.61      20.2 +/-    0.61  0.140 / 0.120
G24     54.9           25.5               13.5 +/-    3.21      26.0 +/-    3.21  0.250 / 0.170
G27     249.8          30.0               14.6 +/-    1.74      25.5 +/-    1.74  0.090 / 0.090
G32     249.3          67.0               12.9 +/-    0.66      13.9 +/-    0.66  0.120 / 0.090