PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-19:12:40
G08     316.4          14.8                7.9 +/-    2.63      19.8 +/-    2.63  0.090 / 0.090
G10     321.6          58.5                8.8 +/-    0.53      10.1 +/-    0.53  0.070 / 0.090
G14     214.5          20.3               10.7 +/-    2.35      23.3 +/-    2.35  0.130 / 0.370
G15     45.9           15.1                7.7 +/-    2.18      19.2 +/-    2.18  0.180 / 0.280
G20     27.1           62.0                7.7 +/-    1.63       8.7 +/-    1.63  0.040 / 0.050
G21     125.2          64.4                9.9 +/-    0.66      10.9 +/-    0.66  0.040 / 0.040
G24     84.5           30.4                9.5 +/-    1.29      16.6 +/-    1.29  0.160 / 0.320
G27     284.8          38.0                6.5 +/-    1.74       9.7 +/-    1.74  0.170 / 0.300
G32     216.7          46.1               11.2 +/-    1.30      14.9 +/-    1.30  0.080 / 0.110