PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-21:28:00
G08     317.5          13.7                8.4 +/-    1.42      21.5 +/-    1.42  0.070 / 0.090
G10     321.3          58.4               10.5 +/-    0.72      12.1 +/-    0.72  0.070 / 0.090
G14     214.4          21.4               15.8 +/-    1.31      33.5 +/-    1.31  0.040 / 0.050
G15     45.9           16.7                7.8 +/-    1.02      18.6 +/-    1.02  0.040 / 0.050
G20     25.1           62.4                9.5 +/-    0.66      10.6 +/-    0.66  0.100 / 0.260
G21     125.0          64.8               12.0 +/-    0.72      13.1 +/-    0.72  0.090 / 0.270
G24     84.2           30.3               10.6 +/-    1.35      18.5 +/-    1.35  0.130 / 0.330
G27     285.1          37.9               10.4 +/-    1.17      15.6 +/-    1.17  0.130 / 0.310
G32     216.8          45.4               14.6 +/-    1.36      19.6 +/-    1.36  0.110 / 0.150