PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-22:28:00
G08     290.0          23.4                9.9 +/-    0.97      20.2 +/-    0.97  0.120 / 0.120
G10     9.9            63.2                9.6 +/-    0.47      10.6 +/-    0.47  0.100 / 0.110
G14     232.2          49.5               14.9 +/-    1.11      18.9 +/-    1.11  0.050 / 0.110
G18     66.5           49.8               10.8 +/-    0.81      13.6 +/-    0.81  0.040 / 0.120
G21     146.6          35.8               11.6 +/-    0.78      18.2 +/-    0.78  0.060 / 0.120
G24     55.4           25.8                9.4 +/-    0.67      18.0 +/-    0.67  0.050 / 0.110
G27     250.6          30.3               12.2 +/-    1.75      21.3 +/-    1.75  0.040 / 0.030
G32     247.8          66.2                9.9 +/-    0.57      10.7 +/-    0.57  0.040 / 0.040