PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-16:12:50
G07     306.6          46.1               11.9 +/-    0.96      15.7 +/-    0.96  0.060 / 0.080
G08     131.3          40.2               12.7 +/-    1.22      18.3 +/-    1.22  0.050 / 0.090
G09     302.9          78.6               11.3 +/-    0.93      11.5 +/-    0.93  0.140 / 0.220
G16     42.1           22.6                8.9 +/-    1.14      18.5 +/-    1.14  0.090 / 0.170
G23     143.1          58.1               11.7 +/-    1.03      13.6 +/-    1.03  0.030 / 0.040
G27     78.5           37.1               10.5 +/-    0.96      16.0 +/-    0.96  0.040 / 0.060
G28     224.2          13.0               11.6 +/-    5.12      30.4 +/-    5.12  0.090 / 0.240
G30     286.4          23.0               10.2 +/-    1.40      20.8 +/-    1.40  0.090 / 0.250