PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-20:43:00
G10     270.0          39.2               21.1 +/-    1.66      31.1 +/-    1.66  0.090 / 0.520
G13     41.2           17.5               13.9 +/-    1.55      32.6 +/-    1.55  0.100 / 0.600
G15     56.1           46.2               16.1 +/-    1.01      21.3 +/-    1.01  0.110 / 0.210
G16     280.8          10.2               16.7 +/-    3.18      46.5 +/-    3.18  0.090 / 0.210
G18     308.5          65.6               17.2 +/-    0.72      18.7 +/-    0.72  0.040 / 0.050
G20     56.5           32.8               14.3 +/-    0.96      23.7 +/-    0.96  0.040 / 0.050
G21     18.5           74.3               16.9 +/-    0.37      17.5 +/-    0.37  0.080 / 0.130
G24     119.1          15.6               21.8 +/-    3.89      53.5 +/-    3.89  0.080 / 0.160
G27     316.3          22.5               14.1 +/-    2.58      29.2 +/-    2.58  0.120 / 0.250
G29     166.1          23.4               20.4 +/-    0.75      41.4 +/-    0.75  0.110 / 0.330