PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-15:27:30
G03     234.8          69.0               12.5 +/-    0.79      13.3 +/-    0.79  0.080 / 0.310
G09     302.1          16.1                7.0 +/-    1.93      17.1 +/-    1.93  0.090 / 0.280
G14     97.2           18.5                9.2 +/-    1.57      20.9 +/-    1.57  0.050 / 0.060
G16     127.9          58.0               12.9 +/-    0.41      15.0 +/-    0.41  0.050 / 0.060
G22     190.2          54.3               12.0 +/-    0.22      14.4 +/-    0.22  0.030 / 0.040
G23     321.1          51.1               11.7 +/-    1.15      14.5 +/-    1.15  0.030 / 0.040
G26     70.0           51.3               10.4 +/-    0.40      12.9 +/-    0.40  0.060 / 0.050
G31     51.8           19.4                9.2 +/-    1.87      20.6 +/-    1.87  0.060 / 0.050