PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/25-17:12:50
G02     80.1           15.9               11.9 +/-    1.57      29.0 +/-    1.57  0.070 / 0.160
G05     44.6           39.8               12.3 +/-    0.87      17.9 +/-    0.87  0.040 / 0.120
G13     106.6          31.2               15.5 +/-    1.55      26.5 +/-    1.55  0.050 / 0.060
G15     147.9          33.6               18.7 +/-    0.72      30.5 +/-    0.72  0.040 / 0.060
G18     228.2          23.8               17.1 +/-    2.03      34.4 +/-    2.03  0.040 / 0.050
G20     273.9          85.0               14.5 +/-    1.00      14.6 +/-    1.00  0.040 / 0.050
G21     293.7          35.0               14.5 +/-    0.96      23.0 +/-    0.96  0.110 / 0.280
G25     210.7          29.5               15.2 +/-    0.97      27.0 +/-    0.97  0.110 / 0.250
G26     313.8          13.6               -6.7 +/-   41.22     -17.3 +/-   41.22  0.050 / 0.150
G29     36.7           84.3               12.8 +/-    1.09      12.8 +/-    1.09  0.060 / 0.160