PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-15:28:10
G03     205.4          52.8               12.3 +/-    1.18      15.0 +/-    1.18  0.030 / 0.050
G07     260.0          17.2               10.6 +/-    1.56      25.0 +/-    1.56  0.040 / 0.050
G09     312.1          30.8               10.0 +/-    0.95      17.2 +/-    0.95  0.050 / 0.060
G16     82.3           63.5               11.1 +/-    0.29      12.3 +/-    0.29  0.060 / 0.060
G22     183.0          33.9               11.4 +/-    2.46      18.5 +/-    2.46  0.090 / 0.410
G23     341.3          67.2                9.8 +/-    0.66      10.5 +/-    0.66  0.100 / 0.280
G26     49.7           38.6               10.1 +/-    0.84      15.0 +/-    0.84  0.040 / 0.050
G27     130.8          13.5               10.0 +/-    2.22      25.7 +/-    2.22  0.030 / 0.050