PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-18:13:10
G02     68.1           25.8               14.8 +/-    1.35      28.3 +/-    1.35  0.040 / 0.090
G05     49.4           55.3               13.6 +/-    0.35      16.2 +/-    0.35  0.040 / 0.090
G12     183.5          22.1               16.6 +/-    1.86      34.6 +/-    1.86  0.050 / 0.170
G13     121.2          22.2               19.6 +/-    0.87      40.9 +/-    0.87  0.050 / 0.180
G15     157.8          20.5               18.9 +/-    3.12      41.0 +/-    3.12  0.070 / 0.170
G20     216.0          71.8               17.5 +/-    0.95      18.3 +/-    0.95  0.070 / 0.210
G21     280.4          25.3               14.5 +/-    0.92      28.1 +/-    0.92  0.070 / 0.230
G25     220.7          42.4               17.0 +/-    0.98      23.8 +/-    0.98  0.070 / 0.270
G29     342.1          69.5               15.3 +/-    0.75      16.2 +/-    0.75  0.040 / 0.060