PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-05:42:40
G05     50.3           12.7                2.2 +/-    2.82       5.8 +/-    2.82  0.040 / 0.050
G10     238.5          16.3                6.5 +/-    1.46      15.7 +/-    1.46  0.060 / 0.050
G13     70.2           35.1                5.7 +/-    1.05       9.0 +/-    1.05  0.060 / 0.120
G15     115.6          54.6                7.4 +/-    0.56       8.9 +/-    0.56  0.080 / 0.110
G16     314.5          11.2                2.3 +/-    6.11       6.1 +/-    6.11  0.320 / 0.370
G20     252.0          40.1                8.5 +/-    1.29      12.4 +/-    1.29  0.270 / 0.450
G21     319.3          51.1                5.8 +/-    0.75       7.2 +/-    0.75  0.140 / 0.190
G26     286.8          18.9                4.2 +/-    1.31       9.5 +/-    1.31  0.120 / 0.180
G29     153.5          62.9                6.3 +/-    0.25       6.9 +/-    0.25  0.200 / 0.150