PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/21-22:27:50
G08     252.9          11.5               11.6 +/-    2.65      31.2 +/-    2.65  0.180 / 0.390
G10     84.8           50.9               12.5 +/-    0.81      15.6 +/-    0.81  0.220 / 0.320
G11     299.1          25.1               13.2 +/-    2.07      25.7 +/-    2.07  0.090 / 0.230
G14     306.8          71.2               12.9 +/-    0.62      13.5 +/-    0.62  0.080 / 0.240
G18     300.1          44.1               13.7 +/-    0.70      18.8 +/-    0.70  0.040 / 0.050
G20     108.0          26.8               14.6 +/-    2.13      27.5 +/-    2.13  0.040 / 0.050
G22     302.2          11.8               11.3 +/-    3.45      30.4 +/-    3.45  0.140 / 0.570
G31     175.9          44.9               15.5 +/-    1.97      20.9 +/-    1.97  0.140 / 0.590
G32     14.3           64.9               11.2 +/-    0.72      12.3 +/-    0.72  0.040 / 0.080