PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-02:27:50
G08     294.0          23.4                8.8 +/-    0.95      17.9 +/-    0.95  0.030 / 0.030
G10     359.9          62.9                8.6 +/-    0.87       9.5 +/-    0.87  0.030 / 0.030
G14     228.3          46.2               11.6 +/-    1.14      15.4 +/-    1.14  0.040 / 0.070
G18     59.0           53.3                9.3 +/-    0.93      11.2 +/-    0.93  0.040 / 0.100
G21     144.7          42.3               12.0 +/-    0.93      16.8 +/-    0.93  0.060 / 0.120
G24     59.6           27.6                7.1 +/-    0.90      13.2 +/-    0.90  0.050 / 0.100
G27     255.1          32.6               10.7 +/-    1.02      17.9 +/-    1.02  0.070 / 0.090
G32     241.1          64.3               11.2 +/-    0.63      12.3 +/-    0.63  0.050 / 0.090