PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-02:57:50
G08     316.6          14.9                5.9 +/-    2.14      14.8 +/-    2.14  0.080 / 0.060
G10     311.1          55.5                6.7 +/-    1.71       8.0 +/-    1.71  0.060 / 0.070
G14     213.1          22.5               12.8 +/-    3.11      26.5 +/-    3.11  0.080 / 0.120
G15     45.7           22.4                5.8 +/-    2.89      12.0 +/-    2.89  0.080 / 0.120
G18     15.2           64.2                7.5 +/-    0.64       8.2 +/-    0.64  0.070 / 0.060
G20     78.8           10.6                7.0 +/-    4.13      19.2 +/-    4.13  0.070 / 0.040
G21     119.3          67.1                7.7 +/-    0.67       8.3 +/-    0.67  0.040 / 0.040
G24     88.2           29.5                9.4 +/-    0.94      16.7 +/-    0.94  0.040 / 0.030
G27     287.0          37.8                7.1 +/-    1.04      10.8 +/-    1.04  0.140 / 0.320
G32     215.8          40.9                9.5 +/-    1.21      13.7 +/-    1.21  0.180 / 0.240