PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-14:57:30
G03     293.8          67.3               11.1 +/-    0.76      11.9 +/-    0.76  0.080 / 0.130
G14     80.5           30.1                9.2 +/-    1.70      16.1 +/-    1.70  0.090 / 0.130
G16     149.7          40.6               10.9 +/-    0.88      15.7 +/-    0.88  0.070 / 0.090
G18     207.3          11.0                9.7 +/-    2.18      26.4 +/-    2.18  0.080 / 0.080
G22     215.2          73.3               10.5 +/-    0.37      10.9 +/-    0.37  0.070 / 0.080
G23     305.7          37.1               10.1 +/-    1.01      15.4 +/-    1.01  0.080 / 0.070
G26     104.0          52.6               11.3 +/-    0.41      13.8 +/-    0.41  0.030 / 0.040
G31     43.9           35.0                9.1 +/-    1.32      14.4 +/-    1.32  0.030 / 0.040