PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-20:42:40
G10     246.0          21.8               20.5 +/-    1.60      43.2 +/-    1.60  0.040 / 0.050
G13     60.5           34.1               13.4 +/-    0.49      21.6 +/-    0.49  0.030 / 0.040
G15     98.3           57.6               15.0 +/-    0.54      17.4 +/-    0.54  0.130 / 0.300
G16     304.8          13.6               12.4 +/-    2.18      32.0 +/-    2.18  0.140 / 0.320
G18     261.4          52.6               18.1 +/-    1.07      22.1 +/-    1.07  0.110 / 0.350
G20     38.8           53.3               13.7 +/-    0.57      16.7 +/-    0.57  0.110 / 0.330
G21     328.8          57.6               14.7 +/-    0.71      17.1 +/-    0.71  0.050 / 0.110
G26     277.3          17.0               15.3 +/-    1.50      36.2 +/-    1.50  0.050 / 0.110
G29     160.9          51.7               14.9 +/-    1.12      18.4 +/-    1.12  0.040 / 0.060