PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-17:27:50
G02     65.0           28.1               14.7 +/-    0.82      26.8 +/-    0.82  0.060 / 0.130
G05     52.6           58.6               15.0 +/-    0.78      17.3 +/-    0.78  0.050 / 0.140
G12     184.4          26.3               18.6 +/-    0.93      35.2 +/-    0.93  0.080 / 0.190
G13     124.6          19.5               19.0 +/-    1.68      42.2 +/-    1.68  0.100 / 0.250
G15     159.9          17.3               19.5 +/-    1.61      45.8 +/-    1.61  0.030 / 0.040
G20     212.3          67.0               18.5 +/-    0.50      19.9 +/-    0.50  0.040 / 0.040
G21     277.2          23.2               13.8 +/-    2.52      28.2 +/-    2.52  0.030 / 0.050
G25     225.2          46.1               18.9 +/-    0.91      25.1 +/-    0.91  0.030 / 0.050
G29     338.7          65.9               15.8 +/-    0.67      17.2 +/-    0.67  0.050 / 0.070