PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/21-00:43:10
G10     292.4          49.6                9.3 +/-    1.07      11.8 +/-    1.07  0.050 / 0.050
G14     209.3          10.9                0.1 +/-   31.72       0.3 +/-   31.72  0.040 / 0.050
G15     46.9           32.3                7.8 +/-    0.79      13.0 +/-    0.79  0.060 / 0.140
G18     349.3          66.5                8.9 +/-    0.78       9.6 +/-    0.78  0.060 / 0.110
G20     69.8           18.9                7.7 +/-    1.02      17.5 +/-    1.02  0.030 / 0.040
G21     87.3           75.2               10.7 +/-    0.92      11.0 +/-    0.92  0.040 / 0.050
G24     102.0          25.3               10.3 +/-    1.34      20.0 +/-    1.34  0.060 / 0.090
G27     301.8          33.9               10.6 +/-    0.96      17.2 +/-    0.96  0.060 / 0.090
G32     210.1          27.8               12.8 +/-    1.52      23.4 +/-    1.52  0.170 / 0.920