PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-19:42:40
G03     204.5          52.3               14.0 +/-    0.64      17.1 +/-    0.64  0.070 / 0.080
G07     260.1          17.5               13.4 +/-    1.66      31.3 +/-    1.66  0.090 / 0.090
G09     312.0          30.4               10.4 +/-    1.29      18.0 +/-    1.29  0.040 / 0.030
G16     85.8           64.7               13.4 +/-    0.58      14.6 +/-    0.58  0.040 / 0.030
G22     185.8          36.6               12.9 +/-    1.87      19.8 +/-    1.87  0.250 / 0.250
G23     336.3          64.7               12.1 +/-    0.86      13.2 +/-    0.86  0.210 / 0.220
G26     50.2           39.7                9.7 +/-    0.89      14.2 +/-    0.89  0.030 / 0.030
G27     130.2          13.7               14.0 +/-    2.37      35.9 +/-    2.37  0.030 / 0.040