PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-14:58:00
G01     90.3           31.8               13.7 +/-    0.65      23.1 +/-    0.65  0.020 / 0.030
G07     125.4          45.7               14.9 +/-    0.96      19.9 +/-    0.96  0.020 / 0.030
G11     68.3           39.5               13.4 +/-    0.35      19.7 +/-    0.35  0.100 / 0.110
G13     294.6          36.1               13.6 +/-    1.37      21.2 +/-    1.37  0.090 / 0.110
G17     214.4          53.3               16.2 +/-    1.18      19.6 +/-    1.18  0.040 / 0.100
G18     63.7           23.8               12.6 +/-    0.58      25.3 +/-    0.58  0.050 / 0.080
G19     214.8          24.3               14.6 +/-    3.66      29.0 +/-    3.66  0.040 / 0.060
G28     348.7          61.8               12.0 +/-    0.77      13.5 +/-    0.77  0.040 / 0.070
G30     101.9          76.9               15.4 +/-    0.75      15.8 +/-    0.75  0.050 / 0.070