PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-18:42:40
G05     48.0           20.6               10.6 +/-    0.70      23.0 +/-    0.70  0.070 / 0.160
G10     235.5          10.6              -10.5 +/-   37.86     -29.0 +/-   37.86  0.070 / 0.160
G13     79.2           37.4               11.8 +/-    0.79      18.0 +/-    0.79  0.040 / 0.050
G15     125.3          51.3               13.5 +/-    0.83      16.8 +/-    0.83  0.040 / 0.040
G18     244.5          41.8               12.2 +/-    1.55      17.2 +/-    1.55  0.050 / 0.070
G20     25.7           68.2               11.5 +/-    0.58      12.3 +/-    0.58  0.040 / 0.060
G21     313.6          48.1               10.5 +/-    1.28      13.6 +/-    1.28  0.120 / 0.240
G25     198.5          10.7               12.7 +/-    1.83      35.1 +/-    1.83  0.100 / 0.210
G26     293.7          18.7                9.8 +/-    1.16      22.3 +/-    1.16  0.220 / 0.480
G29     151.3          67.8               14.0 +/-    0.44      15.0 +/-    0.44  0.260 / 0.410