PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-20:57:40
G01     307.8          33.0                8.2 +/-    1.68      13.5 +/-    1.68  0.090 / 0.150
G10     105.5          39.8               10.2 +/-    0.41      14.9 +/-    0.41  0.090 / 0.180
G11     280.9          28.4                8.5 +/-    1.16      15.4 +/-    1.16  0.040 / 0.050
G14     356.6          67.2                8.4 +/-    0.76       9.1 +/-    0.76  0.040 / 0.050
G20     120.1          14.5                8.7 +/-    1.18      21.9 +/-    1.18  0.060 / 0.130
G22     309.5          24.6                8.4 +/-    2.21      16.7 +/-    2.21  0.060 / 0.110
G25     77.9           15.3                7.1 +/-    1.53      17.5 +/-    1.53  0.100 / 0.200
G31     171.1          62.4               11.0 +/-    0.85      12.3 +/-    0.85  0.100 / 0.220
G32     35.2           53.1                8.7 +/-    0.43      10.6 +/-    0.43  0.030 / 0.040