PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-05:13:10
G05     50.2           12.8                1.6 +/-    1.27       4.3 +/-    1.27  0.100 / 0.170
G10     238.4          16.3                7.8 +/-    2.19      18.9 +/-    2.19  0.090 / 0.180
G13     70.4           35.2                4.3 +/-    0.94       6.8 +/-    0.94  0.050 / 0.060
G15     115.8          54.5                5.5 +/-    0.61       6.6 +/-    0.61  0.050 / 0.080
G16     314.4          11.4                4.8 +/-    2.32      13.0 +/-    2.32  0.080 / 0.140
G20     251.8          40.0                8.8 +/-    1.27      12.8 +/-    1.27  0.080 / 0.160
G21     318.9          50.8                6.6 +/-    0.73       8.2 +/-    0.73  0.050 / 0.120
G26     286.7          19.0                6.5 +/-    2.09      14.7 +/-    2.09  0.050 / 0.150
G29     153.6          63.5                5.7 +/-    0.99       6.3 +/-    0.99  0.030 / 0.050