PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-20:43:00
G01     111.8          23.0               13.8 +/-    1.45      28.3 +/-    1.45  0.060 / 0.160
G07     98.1           62.2               13.8 +/-    0.76      15.4 +/-    0.76  0.080 / 0.090
G08     43.4           28.5                9.4 +/-    2.03      17.1 +/-    2.03  0.100 / 0.140
G09     176.3          18.7               15.7 +/-    1.73      35.8 +/-    1.73  0.110 / 0.160
G11     98.3           42.6               12.2 +/-    0.86      17.1 +/-    0.86  0.020 / 0.020
G13     313.3          25.1               11.3 +/-    0.82      22.0 +/-    0.82  0.030 / 0.030
G17     205.3          28.8               14.8 +/-    0.97      26.5 +/-    0.97  0.030 / 0.040
G18     86.2           23.4               10.8 +/-    1.87      21.9 +/-    1.87  0.030 / 0.040
G28     309.2          60.1               11.8 +/-    1.06      13.3 +/-    1.06  0.090 / 0.150
G30     14.1           75.9               14.3 +/-    0.58      14.7 +/-    0.58  0.110 / 0.160