PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/20-21:58:10
G01     307.9          32.5                9.6 +/-    1.67      16.0 +/-    1.67  0.130 / 0.110
G10     104.7          41.5               11.0 +/-    0.73      15.7 +/-    0.73  0.080 / 0.130
G11     283.0          28.5               10.8 +/-    0.68      19.6 +/-    0.68  0.080 / 0.110
G14     356.2          67.1               10.0 +/-    0.34      10.7 +/-    0.34  0.070 / 0.090
G18     116.8          14.1               11.9 +/-    1.53      30.2 +/-    1.53  0.090 / 0.190
G22     309.0          24.1               10.5 +/-    1.20      20.9 +/-    1.20  0.080 / 0.180
G25     82.3           16.2               12.2 +/-    1.63      29.5 +/-    1.63  0.030 / 0.030
G31     173.0          61.4               12.6 +/-    0.45      14.1 +/-    0.45  0.050 / 0.030
G32     32.9           54.6                9.5 +/-    1.02      11.4 +/-    1.02  0.030 / 0.030