PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-16:12:40
G01     89.6           32.0               11.2 +/-    1.08      18.9 +/-    1.08  0.030 / 0.020
G07     126.0          45.3               11.5 +/-    0.66      15.4 +/-    0.66  0.020 / 0.020
G11     68.0           39.6                9.6 +/-    1.50      14.1 +/-    1.50  0.050 / 0.040
G13     293.9          36.2               10.0 +/-    2.60      15.5 +/-    2.60  0.050 / 0.050
G17     215.1          53.0               12.0 +/-    1.33      14.6 +/-    1.33  0.050 / 0.050
G18     63.2           23.7               10.8 +/-    1.35      21.6 +/-    1.35  0.050 / 0.050
G19     215.1          25.3               11.0 +/-    1.81      21.4 +/-    1.81  0.100 / 0.200
G28     350.1          61.7               10.2 +/-    0.38      11.4 +/-    0.38  0.090 / 0.240
G30     105.3          76.0               11.5 +/-    0.75      11.9 +/-    0.75  0.050 / 0.110