PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-05:42:50
G01     306.9          33.2                4.9 +/-    1.87       8.1 +/-    1.87  0.040 / 0.030
G10     105.5          41.3                5.8 +/-    0.65       8.2 +/-    0.65  0.050 / 0.040
G11     279.4          29.8                7.2 +/-    1.16      12.6 +/-    1.16  0.070 / 0.080
G14     0.9            66.3                3.4 +/-    0.50       3.7 +/-    0.50  0.080 / 0.090
G18     116.6          16.1                5.6 +/-    2.37      13.4 +/-    2.37  0.090 / 0.110
G22     309.6          26.5                4.8 +/-    1.27       9.1 +/-    1.27  0.090 / 0.130
G25     77.4           15.7                4.7 +/-    2.01      11.6 +/-    2.01  0.040 / 0.040
G31     167.1          64.8                7.8 +/-    0.63       8.5 +/-    0.63  0.040 / 0.040
G32     34.8           53.3                5.0 +/-    1.27       6.0 +/-    1.27  0.100 / 0.190