PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-19:57:30
G05     51.0           13.6               10.1 +/-    0.89      25.9 +/-    0.89  0.110 / 0.200
G10     240.9          17.9               13.4 +/-    1.65      31.0 +/-    1.65  0.060 / 0.190
G13     66.6           34.9               12.0 +/-    0.92      19.1 +/-    0.92  0.070 / 0.080
G15     122.2          56.2               13.5 +/-    0.61      15.9 +/-    0.61  0.060 / 0.070
G16     307.2          14.7                9.6 +/-    2.81      24.0 +/-    2.81  0.100 / 0.680
G20     254.9          42.1               13.0 +/-    1.39      18.2 +/-    1.39  0.100 / 0.530
G21     320.2          51.6               13.8 +/-    1.36      17.1 +/-    1.36  0.070 / 0.130
G26     279.9          19.4               10.5 +/-    2.52      23.4 +/-    2.52  0.070 / 0.130
G29     160.1          64.9               14.0 +/-    0.76      15.3 +/-    0.76  0.040 / 0.050