PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-20:28:00
G03     205.4          52.7                9.8 +/-    0.58      12.0 +/-    0.58  0.050 / 0.070
G07     260.2          17.5               10.8 +/-    1.31      25.1 +/-    1.31  0.070 / 0.080
G09     312.0          30.5                7.5 +/-    1.70      13.0 +/-    1.70  0.040 / 0.040
G16     86.8           65.0               11.2 +/-    0.62      12.2 +/-    0.62  0.030 / 0.040
G22     186.2          36.9               10.3 +/-    1.19      15.7 +/-    1.19  0.210 / 0.240
G23     335.6          64.3                9.0 +/-    0.69       9.8 +/-    0.69  0.180 / 0.230
G26     50.3           40.0                8.2 +/-    1.10      12.0 +/-    1.10  0.100 / 0.150
G27     130.2          13.7               13.3 +/-    1.78      34.0 +/-    1.78  0.090 / 0.180