PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-20:28:10
G10     249.8          25.2               17.6 +/-    1.25      34.2 +/-    1.25  0.150 / 0.130
G13     55.5           31.8               13.6 +/-    1.27      23.0 +/-    1.27  0.160 / 0.180
G15     88.1           57.4               16.2 +/-    1.33      18.9 +/-    1.33  0.050 / 0.040
G16     300.5          13.8               10.1 +/-    1.29      25.8 +/-    1.29  0.050 / 0.040
G18     268.2          55.8               14.0 +/-    2.39      16.5 +/-    2.39  0.140 / 0.330
G20     42.0           49.3               14.4 +/-    1.20      18.3 +/-    1.20  0.090 / 0.250
G21     334.9          61.0               14.0 +/-    0.85      15.7 +/-    0.85  0.050 / 0.050
G26     272.9          15.5               15.2 +/-    1.55      37.5 +/-    1.55  0.050 / 0.050
G29     162.4          46.1               17.3 +/-    0.68      23.0 +/-    0.68  0.040 / 0.050