PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-06:27:50
G01     243.7          31.4                5.0 +/-    2.12       8.5 +/-    2.12  0.090 / 0.210
G03     314.2          47.6                5.3 +/-    0.68       6.9 +/-    0.68  0.080 / 0.130
G14     68.2           35.3                2.6 +/-    1.63       4.2 +/-    1.63  0.070 / 0.170
G16     161.3          23.7                6.0 +/-    0.77      12.1 +/-    0.77  0.080 / 0.160
G22     292.8          71.9                3.8 +/-    0.65       4.0 +/-    0.65  0.040 / 0.030
G23     290.9          22.1                6.5 +/-    2.15      13.5 +/-    2.15  0.030 / 0.030
G26     132.3          42.6                5.6 +/-    0.67       7.8 +/-    0.67  0.090 / 0.110
G31     39.8           52.7                3.3 +/-    0.60       4.0 +/-    0.60  0.090 / 0.120
G32     82.2           20.1                3.1 +/-    2.31       6.9 +/-    2.31  0.050 / 0.090