PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-18:42:40
G05     50.7           14.4               17.6 +/-    0.57      44.5 +/-    0.57  0.070 / 0.210
G10     240.2          16.1               23.2 +/-    1.74      56.3 +/-    1.74  0.060 / 0.180
G13     69.6           36.6               19.0 +/-    0.62      29.3 +/-    0.62  0.120 / 0.190
G15     112.8          55.4               21.7 +/-    0.33      25.8 +/-    0.33  0.110 / 0.230
G16     313.2          11.5               17.5 +/-    2.10      47.4 +/-    2.10  0.040 / 0.050
G18     252.1          47.5               19.3 +/-    1.51      25.1 +/-    1.51  0.040 / 0.060
G20     32.1           61.3               20.5 +/-    0.57      23.0 +/-    0.57  0.040 / 0.080
G21     321.2          53.0               20.8 +/-    0.96      25.3 +/-    0.96  0.050 / 0.070
G29     156.5          59.3               23.3 +/-    1.00      26.6 +/-    1.00  0.160 / 0.510