PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-02:57:50
G01     320.0          14.5                6.4 +/-    2.26      16.1 +/-    2.26  0.110 / 0.350
G08     259.6          15.3                8.0 +/-    2.11      19.9 +/-    2.11  0.150 / 0.440
G10     71.5           56.4                6.4 +/-    0.71       7.6 +/-    0.71  0.020 / 0.030
G11     305.3          22.6                6.0 +/-    1.90      12.3 +/-    1.90  0.030 / 0.030
G14     287.9          70.5                7.8 +/-    0.73       8.2 +/-    0.73  0.200 / 0.340
G18     97.4           32.9                6.8 +/-    0.77      11.3 +/-    0.77  0.160 / 0.310
G27     225.7          11.1                8.8 +/-    3.38      23.9 +/-    3.38  0.040 / 0.050
G31     177.9          36.3                8.5 +/-    1.48      13.2 +/-    1.48  0.050 / 0.050
G32     351.7          71.2                7.1 +/-    0.66       7.5 +/-    0.66  0.050 / 0.080