PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-21:58:10
G08     307.9          19.1                9.1 +/-    1.81      20.5 +/-    1.81  0.050 / 0.050
G10     345.1          61.6                8.9 +/-    0.69       9.9 +/-    0.69  0.050 / 0.050
G14     220.3          32.8               13.3 +/-    1.74      22.0 +/-    1.74  0.090 / 0.140
G20     47.9           57.6               11.1 +/-    0.73      12.9 +/-    0.73  0.100 / 0.200
G21     138.8          53.4               11.5 +/-    0.57      13.9 +/-    0.57  0.090 / 0.180
G24     69.9           30.1               10.9 +/-    1.22      19.1 +/-    1.22  0.090 / 0.190
G27     269.1          36.9               11.3 +/-    1.70      17.3 +/-    1.70  0.040 / 0.030
G32     227.1          57.4               11.8 +/-    2.44      13.8 +/-    2.44  0.040 / 0.030