PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-20:27:50
G10     272.7          40.7               21.7 +/-    1.51      31.2 +/-    1.51  0.100 / 0.240
G13     40.3           15.5               15.7 +/-    2.30      38.6 +/-    2.30  0.130 / 0.300
G15     54.0           44.1               18.6 +/-    0.81      25.4 +/-    0.81  0.080 / 0.140
G18     314.5          66.2               18.9 +/-    0.72      20.5 +/-    0.72  0.080 / 0.150
G20     58.1           31.1               19.0 +/-    0.62      32.5 +/-    0.62  0.140 / 0.240
G21     28.0           75.3               20.1 +/-    0.83      20.7 +/-    0.83  0.160 / 0.240
G24     117.0          17.1               25.2 +/-    1.07      59.5 +/-    1.07  0.050 / 0.060
G27     314.9          24.3               17.0 +/-    1.78      33.7 +/-    1.78  0.050 / 0.050
G29     166.2          20.7               23.8 +/-    2.23      51.5 +/-    2.23  0.070 / 0.130
G32     206.2          11.5               19.0 +/-   46.54      51.3 +/-   46.54  0.080 / 0.140