PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-02:57:50
G08     320.1          11.6                4.3 +/-   20.45      11.7 +/-   20.45  0.150 / 0.170
G10     302.4          53.0                8.3 +/-    0.82      10.2 +/-    0.82  0.120 / 0.140
G14     211.2          17.3               12.4 +/-    1.38      29.2 +/-    1.38  0.070 / 0.100
G15     45.9           27.4                6.2 +/-    2.59      11.4 +/-    2.59  0.090 / 0.110
G18     3.0            65.6               -1.2 +/-   37.12      -1.3 +/-   37.12  0.040 / 0.040
G20     74.9           14.0                6.4 +/-    2.57      16.3 +/-    2.57  0.030 / 0.040
G21     107.5          71.6               10.9 +/-    0.68      11.5 +/-    0.68  0.030 / 0.030
G24     94.5           28.0                9.0 +/-    1.17      16.4 +/-    1.17  0.030 / 0.030
G27     293.9          36.6               12.3 +/-    1.29      19.0 +/-    1.29  0.090 / 0.080
G32     212.8          35.5               10.2 +/-    2.53      16.0 +/-    2.53  0.090 / 0.100