PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-04:42:30
G10     248.2          24.5               10.7 +/-    1.08      21.1 +/-    1.08  0.160 / 0.590
G13     56.5           31.6                7.7 +/-    0.73      13.1 +/-    0.73  0.140 / 0.620
G15     92.3           57.8                8.8 +/-    0.76      10.2 +/-    0.76  0.030 / 0.060
G16     297.8          15.7                5.2 +/-    2.85      12.8 +/-    2.85  0.050 / 0.060
G20     289.4          66.4                4.8 +/-    0.62       5.2 +/-    0.62  0.090 / 0.140
G21     329.7          57.9                5.3 +/-    0.94       6.1 +/-    0.94  0.070 / 0.120
G26     269.2          16.8                9.1 +/-    1.32      21.6 +/-    1.32  0.060 / 0.130
G29     164.3          53.8               10.4 +/-    1.21      12.6 +/-    1.21  0.050 / 0.140