PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-00:27:50
G08     294.8          23.3                9.1 +/-    1.64      18.6 +/-    1.64  0.030 / 0.020
G10     358.7          62.8                8.1 +/-    0.91       9.0 +/-    0.91  0.030 / 0.020
G14     227.8          45.4               11.3 +/-    1.98      15.1 +/-    1.98  0.060 / 0.090
G18     59.1           53.0                9.9 +/-    1.09      12.1 +/-    1.09  0.040 / 0.080
G21     144.3          42.0               10.1 +/-    1.31      14.3 +/-    1.31  0.080 / 0.120
G24     60.2           27.8                8.6 +/-    2.37      15.8 +/-    2.37  0.090 / 0.090
G27     255.8          32.9               10.7 +/-    2.37      17.6 +/-    2.37  0.080 / 0.090
G32     239.5          62.5               10.0 +/-    1.22      11.1 +/-    1.22  0.090 / 0.120