PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-19:43:10
G10     245.4          21.3               19.8 +/-    2.50      42.2 +/-    2.50  0.100 / 0.400
G13     61.2           34.4               17.3 +/-    1.23      27.7 +/-    1.23  0.140 / 0.450
G15     99.1           57.4               19.0 +/-    0.71      22.1 +/-    0.71  0.110 / 0.330
G16     306.1          13.2               14.7 +/-    1.97      38.1 +/-    1.97  0.120 / 0.290
G18     260.6          52.4               19.6 +/-    0.83      24.0 +/-    0.83  0.050 / 0.070
G20     37.9           54.4               16.8 +/-    0.62      20.1 +/-    0.62  0.040 / 0.060
G21     328.6          57.5               17.3 +/-    0.61      20.1 +/-    0.61  0.050 / 0.120
G26     278.7          17.1               16.2 +/-    2.07      38.3 +/-    2.07  0.050 / 0.140
G29     160.2          51.8               19.8 +/-    1.39      24.4 +/-    1.39  0.050 / 0.050