PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-03:12:50
G08     268.9          19.5                7.8 +/-    3.00      17.4 +/-    3.00  0.040 / 0.060
G10     52.9           60.4                5.7 +/-    0.67       6.4 +/-    0.67  0.030 / 0.030
G11     312.3          16.9                3.9 +/-    2.29       9.3 +/-    2.29  0.160 / 0.230
G14     262.0          65.7                6.4 +/-    1.27       6.9 +/-    1.27  0.100 / 0.380
G18     87.7           39.5                6.8 +/-    0.80      10.0 +/-    0.80  0.030 / 0.030
G21     153.5          18.3                7.5 +/-    1.83      17.2 +/-    1.83  0.030 / 0.020
G24     41.8           13.9                4.8 +/-    3.16      12.3 +/-    3.16  0.090 / 0.220
G27     233.0          17.7                9.4 +/-    2.15      22.0 +/-    2.15  0.080 / 0.230
G31     179.5          26.2                9.0 +/-    1.49      17.2 +/-    1.49  0.150 / 0.250
G32     318.9          75.2                6.1 +/-    0.52       6.3 +/-    0.52  0.140 / 0.110