PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-22:28:00
G05     46.7           25.4               10.9 +/-    1.42      21.1 +/-    1.42  0.110 / 0.280
G13     84.2           37.3               14.9 +/-    0.73      22.8 +/-    0.73  0.120 / 0.320
G15     133.4          48.2               14.6 +/-    1.37      18.8 +/-    1.37  0.230 / 0.580
G18     240.8          37.5               12.4 +/-    1.66      18.8 +/-    1.66  0.110 / 0.530
G20     24.6           70.4               10.8 +/-    0.81      11.4 +/-    0.81  0.070 / 0.080
G21     308.3          44.2               10.8 +/-    0.97      14.8 +/-    0.97  0.050 / 0.080
G25     198.5          12.3               14.2 +/-    2.47      37.6 +/-    2.47  0.070 / 0.090
G26     295.0          19.7               11.1 +/-    1.53      24.7 +/-    1.53  0.100 / 0.110
G29     149.3          75.0               13.8 +/-    0.80      14.2 +/-    0.80  0.020 / 0.020