PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-07:13:10
G08     319.0          12.8                2.8 +/-    2.16       7.2 +/-    2.16  0.050 / 0.080
G10     311.0          56.1                5.4 +/-    1.34       6.4 +/-    1.34  0.050 / 0.090
G14     212.1          19.5                2.6 +/-    4.48       5.8 +/-    4.48  0.030 / 0.040
G15     45.5           19.9                2.9 +/-    1.51       6.4 +/-    1.51  0.030 / 0.040
G20     11.6           64.2                5.0 +/-    0.60       5.5 +/-    0.60  0.030 / 0.040
G21     117.4          66.9                7.1 +/-    1.06       7.6 +/-    1.06  0.030 / 0.030
G24     87.8           28.7                5.5 +/-    0.66      10.0 +/-    0.66  0.150 / 0.610
G27     293.1          36.2                4.7 +/-    0.78       7.3 +/-    0.78  0.160 / 0.490
G32     214.7          35.1                8.2 +/-    1.04      13.0 +/-    1.04  0.070 / 0.120