PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-21:28:00
G08     289.6          23.3               11.5 +/-    0.98      23.3 +/-    0.98  0.090 / 0.080
G10     11.4           63.2               10.6 +/-    0.55      11.7 +/-    0.55  0.100 / 0.110
G14     232.8          49.8               15.1 +/-    1.63      19.1 +/-    1.63  0.060 / 0.110
G18     67.6           49.1               11.0 +/-    0.92      14.0 +/-    0.92  0.060 / 0.110
G21     146.8          34.5               11.3 +/-    1.06      18.0 +/-    1.06  0.050 / 0.100
G24     54.8           25.4               10.4 +/-    0.72      20.1 +/-    0.72  0.050 / 0.130
G27     250.0          30.0               13.1 +/-    1.41      23.0 +/-    1.41  0.030 / 0.030
G32     249.5          67.3               12.5 +/-    0.55      13.5 +/-    0.55  0.040 / 0.030