PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-17:42:50
G02     202.8          29.4               15.0 +/-    1.63      26.6 +/-    1.63  0.120 / 0.420
G06     160.2          66.5               13.5 +/-    0.98      14.6 +/-    0.98  0.180 / 0.480
G12     306.5          15.3               10.0 +/-    2.35      24.7 +/-    2.35  0.050 / 0.120
G17     32.3           52.1               10.7 +/-    0.61      13.1 +/-    0.61  0.050 / 0.130
G19     344.7          68.0               11.7 +/-    1.09      12.5 +/-    1.09  0.080 / 0.080
G24     300.8          37.1               13.7 +/-    0.97      21.0 +/-    0.97  0.080 / 0.100
G28     98.8           33.6               11.2 +/-    0.62      18.3 +/-    0.62  0.070 / 0.150