PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-14:58:10
G03     236.4          69.1               10.7 +/-    1.11      11.4 +/-    1.11  0.080 / 0.190
G09     302.0          16.1                6.3 +/-    2.01      15.3 +/-    2.01  0.120 / 0.250
G14     97.0           18.8                9.4 +/-    1.98      21.4 +/-    1.98  0.050 / 0.090
G16     127.9          57.9               11.5 +/-    0.58      13.3 +/-    0.58  0.060 / 0.090
G22     189.6          54.1               11.4 +/-    1.17      13.7 +/-    1.17  0.040 / 0.050
G23     321.3          51.3                9.6 +/-    1.40      11.9 +/-    1.40  0.050 / 0.050
G26     70.1           51.3               10.1 +/-    0.47      12.6 +/-    0.47  0.030 / 0.060
G31     51.8           19.4                7.3 +/-    0.86      16.4 +/-    0.86  0.030 / 0.050