PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-05:12:50
G01     227.2          18.0                7.7 +/-    2.22      17.8 +/-    2.22  0.030 / 0.070
G03     293.7          64.7                7.1 +/-    0.80       7.8 +/-    0.80  0.060 / 0.080
G14     86.2           23.6                4.5 +/-    0.76       9.2 +/-    0.76  0.080 / 0.090
G16     151.7          42.3                9.2 +/-    0.56      12.9 +/-    0.56  0.050 / 0.120
G22     221.8          72.2                7.5 +/-    0.43       7.8 +/-    0.43  0.170 / 0.150
G23     305.3          34.7                5.8 +/-    1.15       9.2 +/-    1.15  0.120 / 0.210
G26     106.0          54.6                6.5 +/-    0.42       7.8 +/-    0.42  0.030 / 0.030
G31     43.8           35.7                5.8 +/-    1.22       9.0 +/-    1.22  0.030 / 0.030