PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-05:42:40
G01     306.9          33.2                5.8 +/-    1.49       9.6 +/-    1.49  0.060 / 0.090
G10     105.5          41.3                5.5 +/-    0.38       7.8 +/-    0.38  0.060 / 0.090
G11     279.4          29.8                8.2 +/-    1.78      14.5 +/-    1.78  0.040 / 0.050
G14     0.9            66.3                5.2 +/-    0.94       5.6 +/-    0.94  0.040 / 0.050
G18     116.6          16.1                3.9 +/-    1.33       9.5 +/-    1.33  0.080 / 0.140
G22     309.6          26.5                1.8 +/-    1.52       3.3 +/-    1.52  0.060 / 0.150
G25     77.4           15.7                3.8 +/-    1.01       9.2 +/-    1.01  0.040 / 0.050
G31     167.1          64.8                8.1 +/-    1.13       8.8 +/-    1.13  0.040 / 0.060
G32     34.8           53.3                4.7 +/-    0.57       5.7 +/-    0.57  0.090 / 0.260