PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-04:57:50
G01     222.9          13.7                5.1 +/-    2.25      13.1 +/-    2.25  0.200 / 0.400
G03     278.9          67.9                5.1 +/-    0.48       5.4 +/-    0.48  0.270 / 0.410
G09     297.5          12.4                5.3 +/-    2.73      14.0 +/-    2.73  0.040 / 0.050
G14     91.5           19.9                4.0 +/-    0.85       8.7 +/-    0.85  0.030 / 0.060
G16     147.1          48.3                7.2 +/-    1.23       9.3 +/-    1.23  0.160 / 0.360
G22     208.4          67.2                5.0 +/-    1.28       5.3 +/-    1.28  0.140 / 0.250
G23     309.8          39.1                4.2 +/-    1.13       6.3 +/-    1.13  0.070 / 0.210
G26     94.8           56.1                5.7 +/-    0.71       6.7 +/-    0.71  0.070 / 0.220
G31     46.1           30.8                2.6 +/-    0.59       4.4 +/-    0.59  0.050 / 0.090