PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-03:27:50
G08     264.1          17.5               11.1 +/-    1.26      25.8 +/-    1.26  0.020 / 0.020
G10     62.5           58.6                6.5 +/-    1.05       7.5 +/-    1.05  0.020 / 0.020
G11     309.0          20.0                8.8 +/-    2.09      19.3 +/-    2.09  0.030 / 0.020
G14     273.9          68.5                7.6 +/-    0.49       8.1 +/-    0.49  0.030 / 0.030
G18     92.6           36.4                6.6 +/-    0.81      10.2 +/-    0.81  0.110 / 0.280
G21     154.4          13.5                6.6 +/-    3.40      17.1 +/-    3.40  0.130 / 0.320
G24     39.7           10.3                6.4 +/-    4.53      17.9 +/-    4.53  0.070 / 0.160
G27     229.3          14.4               10.8 +/-    2.12      27.3 +/-    2.12  0.070 / 0.260
G31     178.5          31.4                8.7 +/-    1.09      14.8 +/-    1.09  0.030 / 0.050
G32     337.9          73.6                7.4 +/-    0.53       7.6 +/-    0.53  0.040 / 0.040