PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-02:27:40
G08     299.6          22.6                6.2 +/-    1.09      12.8 +/-    1.09  0.060 / 0.040
G10     348.0          62.0                8.5 +/-    0.47       9.5 +/-    0.47  0.050 / 0.070
G14     223.9          41.1               12.1 +/-    2.49      17.3 +/-    2.49  0.040 / 0.050
G18     50.9           56.1                8.7 +/-    1.07      10.3 +/-    1.07  0.040 / 0.060
G21     141.3          48.0               10.6 +/-    0.46      13.7 +/-    0.46  0.060 / 0.080
G24     65.4           29.3                6.0 +/-    1.45      10.6 +/-    1.45  0.070 / 0.070
G27     261.5          35.0               11.1 +/-    2.10      17.7 +/-    2.10  0.030 / 0.030
G32     233.0          59.4                9.8 +/-    1.62      11.1 +/-    1.62  0.040 / 0.030