PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-22:42:40
G05     48.1           21.2                9.7 +/-    2.57      20.8 +/-    2.57  0.290 / 0.350
G10     236.2          11.4                3.7 +/-   61.83      10.0 +/-   61.83  0.200 / 0.510
G13     77.7           37.5               14.0 +/-    0.93      21.2 +/-    0.93  0.070 / 0.050
G15     126.8          51.8               17.0 +/-    0.63      21.0 +/-    0.63  0.080 / 0.060
G16     316.1          11.0                5.5 +/-   15.84      15.0 +/-   15.84  0.150 / 0.240
G18     245.1          41.3               16.7 +/-    1.94      23.8 +/-    1.94  0.130 / 0.230
G20     29.2           65.5               12.0 +/-    0.33      13.0 +/-    0.33  0.160 / 0.270
G21     312.9          47.3               12.9 +/-    1.03      16.9 +/-    1.03  0.200 / 0.290
G26     290.0          19.7               11.1 +/-    1.54      24.6 +/-    1.54  0.030 / 0.030
G29     154.4          69.4               17.1 +/-    0.99      18.1 +/-    0.99  0.020 / 0.030