PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-22:42:50
G08     297.9          23.0                8.8 +/-    1.20      18.1 +/-    1.20  0.050 / 0.060
G10     355.5          62.5                9.0 +/-    0.48      10.0 +/-    0.48  0.040 / 0.060
G14     225.0          40.6               13.1 +/-    1.86      18.9 +/-    1.86  0.080 / 0.080
G20     56.7           55.3                9.3 +/-    0.70      11.0 +/-    0.70  0.080 / 0.100
G21     143.3          46.0               10.6 +/-    0.74      14.1 +/-    0.74  0.120 / 0.090
G24     59.3           26.1                7.7 +/-    1.94      14.7 +/-    1.94  0.110 / 0.090
G27     262.2          34.2               12.7 +/-    0.93      20.5 +/-    0.93  0.030 / 0.030
G32     236.3          63.9               10.5 +/-    1.31      11.5 +/-    1.31  0.030 / 0.030