PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-21:57:40
G02     49.5           42.3               -2.1 +/-   38.35      -3.0 +/-   38.35  0.060 / 0.050
G05     86.2           70.3               11.1 +/-    1.27      11.7 +/-    1.27  0.040 / 0.060
G12     186.2          42.0               13.5 +/-    2.06      19.0 +/-    2.06  0.130 / 0.640
G20     202.4          50.8               11.7 +/-    8.43      14.6 +/-    8.43  0.140 / 0.660
G21     263.3          11.2                8.3 +/-   17.83      22.5 +/-   17.83  0.040 / 0.070
G25     244.2          57.4               13.5 +/-    0.73      15.6 +/-    0.73  0.040 / 0.060
G29     323.0          47.2               11.1 +/-    1.12      14.4 +/-    1.12  0.050 / 0.080