PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-01:13:10
G10     259.1          32.2                7.5 +/-   11.81      12.6 +/-   11.81  0.160 / 0.440
G13     46.9           25.3                7.6 +/-    1.61      14.8 +/-    1.61  0.260 / 0.530
G15     72.3           55.7                7.8 +/-    2.45       9.2 +/-    2.45  0.220 / 0.350
G16     287.9          13.5                6.9 +/-    2.12      17.9 +/-    2.12  0.250 / 0.340
G18     283.1          60.1               -2.4 +/-   37.01      -2.7 +/-   37.01  0.140 / 0.100
G20     50.1           39.3                7.3 +/-    1.79      10.8 +/-    1.79  0.130 / 0.090
G21     346.7          66.8               11.4 +/-    9.81      12.3 +/-    9.81  0.040 / 0.040
G26     260.8          11.5                6.2 +/-   24.96      16.7 +/-   24.96  0.040 / 0.040
G27     320.7          14.2                5.5 +/-    5.78      14.0 +/-    5.78  0.100 / 0.230
G29     166.3          37.4                9.3 +/-    3.45      14.1 +/-    3.45  0.140 / 0.220