PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-19:43:10
G05     50.0           15.8                6.1 +/-    2.29      14.9 +/-    2.29  0.100 / 0.200
G10     239.1          16.0                9.8 +/-    0.93      23.8 +/-    0.93  0.140 / 0.290
G13     69.8           35.5                8.7 +/-    1.19      13.7 +/-    1.19  0.040 / 0.060
G15     126.4          54.6                8.4 +/-    0.89      10.1 +/-    0.89  0.070 / 0.050
G16     309.6          14.1                5.5 +/-    2.00      14.0 +/-    2.00  0.110 / 0.320
G20     252.3          40.2                8.3 +/-    0.94      12.0 +/-    0.94  0.100 / 0.350
G21     317.6          49.9                7.0 +/-    1.27       8.8 +/-    1.27  0.070 / 0.120
G26     282.6          19.9                6.8 +/-    1.85      15.0 +/-    1.85  0.070 / 0.130
G29     158.6          67.9                8.5 +/-    0.74       9.1 +/-    0.74  0.040 / 0.050