PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-20:27:50
G02     83.2           14.4               14.9 +/-    1.23      37.5 +/-    1.23  0.060 / 0.110
G05     44.5           37.7               14.2 +/-    0.38      21.4 +/-    0.38  0.070 / 0.110
G13     101.6          33.6               18.0 +/-    1.18      29.3 +/-    1.18  0.110 / 0.350
G15     145.6          37.3               18.7 +/-    0.82      28.4 +/-    0.82  0.130 / 0.280
G18     231.0          26.9               16.7 +/-    0.78      31.2 +/-    0.78  0.160 / 0.210
G20     349.5          83.9               14.7 +/-    0.51      14.8 +/-    0.51  0.110 / 0.300
G21     296.8          36.4               16.1 +/-    1.01      25.0 +/-    1.01  0.040 / 0.050
G25     206.2          24.2               16.3 +/-    4.22      32.4 +/-    4.22  0.040 / 0.040
G26     308.6          16.5               15.0 +/-    2.07      36.0 +/-    2.07  0.060 / 0.100
G29     71.6           86.1               16.1 +/-    0.60      16.1 +/-    0.60  0.050 / 0.100