PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-14:58:10
G02     202.6          29.0               21.1 +/-    1.12      37.7 +/-    1.12  0.120 / 0.180
G03     62.8           9.6                14.9 +/-    1.75      42.0 +/-    1.75  0.110 / 0.270
G06     165.6          64.6               19.1 +/-    0.46      20.9 +/-    0.46  0.060 / 0.080
G12     305.7          12.4               14.1 +/-    3.38      37.3 +/-    3.38  0.080 / 0.090
G17     35.2           49.9               15.9 +/-    0.90      20.1 +/-    0.90  0.340 / 0.330
G19     358.4          66.6               16.5 +/-    0.35      17.8 +/-    0.35  0.220 / 0.320
G24     303.5          34.8               13.7 +/-    1.33      21.8 +/-    1.33  0.040 / 0.050
G28     99.2           33.2               16.2 +/-    1.12      26.6 +/-    1.12  0.050 / 0.040