PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-18:28:00
G05     49.7           15.6                8.8 +/-    1.85      21.6 +/-    1.85  0.090 / 0.320
G10     238.6          17.2               10.1 +/-    1.58      23.9 +/-    1.58  0.100 / 0.320
G13     69.5           34.7               10.2 +/-    0.64      16.3 +/-    0.64  0.050 / 0.050
G15     117.5          54.9               11.5 +/-    0.73      13.7 +/-    0.73  0.050 / 0.070
G16     310.0          14.1                8.2 +/-    1.84      20.8 +/-    1.84  0.050 / 0.110
G20     252.8          41.3               12.6 +/-    0.92      18.0 +/-    0.92  0.060 / 0.150
G21     317.0          48.9               11.5 +/-    0.82      14.7 +/-    0.82  0.100 / 0.340
G26     283.3          19.7               10.1 +/-    2.42      22.3 +/-    2.42  0.120 / 0.480
G29     156.6          68.6               13.0 +/-    1.14      13.9 +/-    1.14  0.030 / 0.050