PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-22:43:00
G02     70.7           25.3               10.5 +/-    1.94      20.4 +/-    1.94  0.120 / 0.140
G05     46.7           50.4                8.2 +/-    0.86      10.3 +/-    0.86  0.110 / 0.120
G12     181.2          15.9               14.1 +/-    1.47      34.4 +/-    1.47  0.170 / 0.210
G13     116.5          25.6               11.9 +/-    1.50      22.9 +/-    1.50  0.090 / 0.160
G15     157.1          23.6               12.5 +/-    0.80      25.2 +/-    0.80  0.070 / 0.130
G18     223.3          13.2               12.6 +/-   10.64      32.7 +/-   10.64  0.120 / 0.160
G20     222.7          78.9               10.8 +/-    0.62      11.0 +/-    0.62  0.110 / 0.320
G21     283.6          26.7               11.5 +/-    1.76      21.6 +/-    1.76  0.140 / 0.210
G25     213.5          36.7               11.0 +/-    1.86      17.0 +/-    1.86  0.030 / 0.030
G29     342.0          72.1               10.1 +/-    0.80      10.5 +/-    0.80  0.020 / 0.020