PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-21:42:50
G05     46.6           26.1               13.6 +/-    1.85      26.0 +/-    1.85  0.040 / 0.080
G13     84.4           37.4               15.7 +/-    0.60      23.9 +/-    0.60  0.080 / 0.090
G15     132.7          48.4               16.8 +/-    1.29      21.6 +/-    1.29  0.110 / 0.260
G18     240.9          37.8               14.9 +/-    1.19      22.5 +/-    1.19  0.110 / 0.240
G20     24.1           70.6               15.1 +/-    0.44      15.9 +/-    0.44  0.090 / 0.480
G21     308.6          44.4               13.7 +/-    1.60      18.6 +/-    1.60  0.100 / 0.400
G25     198.9          12.6               17.8 +/-    1.94      46.8 +/-    1.94  0.070 / 0.110
G26     295.4          19.5               13.9 +/-    1.77      30.9 +/-    1.77  0.080 / 0.130
G29     148.9          74.4               15.7 +/-    0.39      16.3 +/-    0.39  0.050 / 0.120