PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-18:43:10
G05     49.5           17.1               10.1 +/-    1.22      23.9 +/-    1.22  0.090 / 0.150
G10     238.1          13.7               13.1 +/-    2.96      33.7 +/-    2.96  0.070 / 0.150
G13     73.8           37.1               11.0 +/-    0.50      16.8 +/-    0.50  0.060 / 0.070
G15     118.7          53.8               13.1 +/-    0.79      15.8 +/-    0.79  0.040 / 0.060
G16     315.9          10.5               -1.4 +/-   21.43      -3.9 +/-   21.43  0.110 / 0.210
G18     248.6          45.1               13.8 +/-    1.05      18.6 +/-    1.05  0.100 / 0.190
G20     29.4           64.3               12.4 +/-    0.46      13.6 +/-    0.46  0.050 / 0.040
G21     317.8          50.9               12.4 +/-    0.90      15.5 +/-    0.90  0.040 / 0.050
G26     289.7          18.6               11.4 +/-    2.19      26.0 +/-    2.19  0.130 / 0.690
G29     154.5          63.0               14.1 +/-    0.82      15.7 +/-    0.82  0.150 / 0.640