PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-04:13:10
G08     286.3          23.4               -6.8 +/-   18.35     -13.9 +/-   18.35  0.030 / 0.040
G10     16.1           63.3                3.7 +/-    0.78       4.1 +/-    0.78  0.030 / 0.040
G14     235.5          52.7                6.5 +/-    1.05       8.0 +/-    1.05  0.080 / 0.140
G18     67.9           50.0              -61.6 +/-   58.57     -77.6 +/-   58.57  0.090 / 0.110
G21     148.4          35.5                6.2 +/-    1.51       9.7 +/-    1.51  0.060 / 0.110
G24     52.9           24.3                4.7 +/-    0.47       9.3 +/-    0.47  0.060 / 0.100
G27     247.5          28.6                5.1 +/-    1.42       9.2 +/-    1.42  0.050 / 0.120
G31     182.6          10.8               -5.6 +/-   12.15     -15.4 +/-   12.15  0.040 / 0.110
G32     257.3          70.8               12.0 +/-    4.27      12.6 +/-    4.27  0.060 / 0.070