PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-17:28:00
G02     238.7          73.4                7.9 +/-    0.44       8.2 +/-    0.44  0.220 / 0.420
G05     172.2          15.1                7.0 +/-    2.49      17.4 +/-    2.49  0.070 / 0.080
G06     40.7           58.8                7.5 +/-    0.78       8.6 +/-    0.78  0.090 / 0.080
G12     321.0          49.8                7.5 +/-    0.76       9.5 +/-    0.76  0.060 / 0.120
G17     68.1           25.5                7.2 +/-    2.35      13.8 +/-    2.35  0.060 / 0.110
G19     56.9           37.8                6.4 +/-    2.40       9.7 +/-    2.40  0.050 / 0.060
G24     246.8          35.1               10.6 +/-    2.53      16.8 +/-    2.53  0.050 / 0.080
G25     316.0          10.6              -15.4 +/-   24.14     -42.3 +/-   24.14  0.040 / 0.040