PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-21:43:00
G10     281.1          45.6               11.9 +/-    0.72      15.8 +/-    0.72  0.030 / 0.040
G15     52.0           44.2               11.7 +/-    0.93      15.9 +/-    0.93  0.030 / 0.040
G20     323.2          64.4               10.9 +/-    0.39      11.9 +/-    0.39  0.070 / 0.130
G21     44.7           77.1               12.3 +/-    0.35      12.6 +/-    0.35  0.100 / 0.130
G24     107.2          21.0               11.9 +/-    1.61      25.6 +/-    1.61  0.060 / 0.070
G27     312.2          26.8               10.8 +/-    1.29      20.3 +/-    1.29  0.070 / 0.100
G29     168.7          19.4               13.8 +/-    0.92      30.7 +/-    0.92  0.100 / 0.190
G32     206.3          21.3               14.8 +/-    2.56      31.6 +/-    2.56  0.110 / 0.170