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               -9.8 +/-   14.16     -19.8 +/-   14.16  0.030 / 0.020
G10     16.1           63.3                6.7 +/-    0.56       7.4 +/-    0.56  0.020 / 0.020
G14     235.5          52.7                6.8 +/-    2.13       8.3 +/-    2.13  0.030 / 0.020
G18     67.9           50.0              -74.2 +/-   44.36     -93.5 +/-   44.36  0.030 / 0.020
G24     52.9           24.3                5.3 +/-    2.10      10.5 +/-    2.10  0.220 / 0.170
G27     247.5          28.6                6.4 +/-    0.96      11.6 +/-    0.96  0.150 / 0.100
G31     182.6          10.8               -4.9 +/-   10.85     -13.5 +/-   10.85  0.090 / 0.100
G32     257.3          70.8                5.7 +/-    0.72       6.0 +/-    0.72  0.080 / 0.110