PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-23:27:30
G10     256.2          31.2               16.1 +/-    2.20      27.6 +/-    2.20  0.160 / 0.480
G13     48.3           25.9                9.8 +/-    1.45      18.7 +/-    1.45  0.140 / 0.440
G15     78.6           57.7               10.3 +/-    0.32      12.0 +/-    0.32  0.040 / 0.050
G16     287.8          15.2               10.0 +/-    1.77      24.7 +/-    1.77  0.040 / 0.050
G20     261.6          29.7                8.8 +/-    1.09      15.5 +/-    1.09  0.080 / 0.110
G21     340.5          63.9                9.1 +/-    1.40      10.0 +/-    1.40  0.070 / 0.110
G26     260.4          13.0               13.8 +/-    2.35      36.1 +/-    2.35  0.050 / 0.070
G29     166.7          44.1               11.9 +/-    0.94      16.3 +/-    0.94  0.040 / 0.070