PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-06:58:00
G08     319.0          12.8                3.5 +/-    2.01       9.1 +/-    2.01  0.060 / 0.090
G10     311.4          56.2                4.0 +/-    1.48       4.7 +/-    1.48  0.080 / 0.080
G14     212.2          19.6                3.0 +/-    2.54       6.6 +/-    2.54  0.040 / 0.040
G15     45.5           19.8                2.9 +/-    2.10       6.3 +/-    2.10  0.040 / 0.040
G20     12.0           64.2                4.6 +/-    0.75       5.0 +/-    0.75  0.050 / 0.050
G21     117.6          66.9                6.4 +/-    1.06       6.9 +/-    1.06  0.060 / 0.040
G24     87.7           28.8                5.7 +/-    0.79      10.2 +/-    0.79  0.090 / 0.120
G27     292.9          36.3                4.0 +/-    2.32       6.2 +/-    2.32  0.080 / 0.130
G32     214.8          35.5                6.3 +/-    1.18       9.9 +/-    1.18  0.220 / 0.540