PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-20:28:10
G05     45.8           28.6               12.8 +/-    1.20      23.1 +/-    1.20  0.140 / 0.260
G13     89.4           36.7               13.8 +/-    1.11      21.3 +/-    1.11  0.160 / 0.230
G15     136.3          45.5               15.2 +/-    0.58      20.4 +/-    0.58  0.070 / 0.130
G18     237.8          35.1               16.7 +/-    1.51      26.5 +/-    1.51  0.080 / 0.140
G20     18.5           74.8               14.6 +/-    0.43      15.0 +/-    0.43  0.050 / 0.090
G21     305.5          42.4               14.7 +/-    1.10      20.6 +/-    1.10  0.090 / 0.090
G25     201.4          16.1               18.9 +/-    1.83      45.8 +/-    1.83  0.020 / 0.020
G26     299.8          18.7               11.7 +/-    1.18      26.5 +/-    1.18  0.030 / 0.020
G29     142.1          77.9               15.3 +/-    0.80      15.6 +/-    0.80  0.030 / 0.040