PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-22:12:30
G02     56.7           36.4                7.8 +/-    1.07      12.1 +/-    1.07  0.030 / 0.040
G05     64.2           65.6                8.7 +/-    0.74       9.5 +/-    0.74  0.040 / 0.040
G12     184.6          32.8               13.6 +/-    1.08      22.5 +/-    1.08  0.040 / 0.070
G13     130.7          14.2               14.9 +/-    3.82      37.7 +/-    3.82  0.040 / 0.060
G20     205.9          60.2               12.2 +/-    0.87      13.8 +/-    0.87  0.060 / 0.110
G21     269.8          16.4               13.0 +/-    2.35      31.2 +/-    2.35  0.050 / 0.090
G25     230.3          51.7               10.1 +/-    1.84      12.5 +/-    1.84  0.200 / 0.510
G29     328.7          55.1                8.7 +/-    0.51      10.4 +/-    0.51  0.190 / 0.470