PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/23-21:42:50
G08     295.9          23.0               13.8 +/-    1.19      28.3 +/-    1.19  0.060 / 0.100
G10     357.6          62.7               13.5 +/-    0.68      15.0 +/-    0.68  0.060 / 0.110
G14     227.2          44.4               18.0 +/-    1.15      24.4 +/-    1.15  0.090 / 0.120
G18     59.4           52.6               13.9 +/-    1.04      17.0 +/-    1.04  0.090 / 0.090
G24     60.7           28.0               12.7 +/-    0.84      23.3 +/-    0.84  0.060 / 0.080
G27     256.6          33.2               15.3 +/-    1.11      25.2 +/-    1.11  0.060 / 0.100
G32     238.4          61.9               16.4 +/-    0.55      18.4 +/-    0.55  0.030 / 0.040