PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-14:12:50
G03     209.4          56.2                9.8 +/-    0.59      11.5 +/-    0.59  0.030 / 0.040
G07     257.7          15.5                7.3 +/-    2.44      17.8 +/-    2.44  0.030 / 0.040
G09     310.8          28.8                6.6 +/-    1.93      11.8 +/-    1.93  0.070 / 0.200
G16     89.1           63.8                9.1 +/-    0.77      10.0 +/-    0.77  0.080 / 0.220
G22     184.1          37.2               10.6 +/-    0.92      16.1 +/-    0.92  0.040 / 0.030
G23     338.0          64.9                8.5 +/-    0.35       9.3 +/-    0.35  0.030 / 0.030
G26     51.6           40.7                7.5 +/-    1.32      10.8 +/-    1.32  0.050 / 0.040
G27     133.0          11.5               10.3 +/-    1.97      27.7 +/-    1.97  0.040 / 0.030