PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-14:42:30
G03     241.8          69.9               11.0 +/-    0.61      11.7 +/-    0.61  0.030 / 0.040
G09     301.1          15.0                7.0 +/-    2.18      17.4 +/-    2.18  0.030 / 0.040
G14     95.5           20.0                9.0 +/-    1.96      19.9 +/-    1.96  0.120 / 0.200
G16     130.5          56.6               11.7 +/-    0.52      13.7 +/-    0.52  0.100 / 0.190
G22     190.3          55.7               11.3 +/-    0.48      13.3 +/-    0.48  0.050 / 0.050
G23     320.0          50.2                9.3 +/-    0.90      11.7 +/-    0.90  0.050 / 0.060
G26     72.7           51.9                9.5 +/-    1.01      11.7 +/-    1.01  0.040 / 0.050
G31     51.0           20.6                8.0 +/-    3.46      17.3 +/-    3.46  0.040 / 0.050