PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-23:27:30
G08     305.2          21.0               10.4 +/-    1.30      22.3 +/-    1.30  0.040 / 0.070
G10     336.8          60.6               10.9 +/-    0.61      12.3 +/-    0.61  0.050 / 0.070
G14     220.2          35.6               17.6 +/-    0.53      27.6 +/-    0.53  0.060 / 0.100
G18     44.0           57.9               11.9 +/-    0.39      13.8 +/-    0.39  0.060 / 0.080
G21     137.0          52.1               14.8 +/-    0.55      18.2 +/-    0.55  0.050 / 0.050
G24     71.6           30.4               12.5 +/-    0.54      21.8 +/-    0.54  0.040 / 0.050
G27     268.5          36.9               13.8 +/-    1.02      21.2 +/-    1.02  0.060 / 0.090
G32     226.6          52.5               16.9 +/-    0.98      20.7 +/-    0.98  0.070 / 0.100