PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-08:27:50
G08     291.1          23.3                6.3 +/-    0.75      12.8 +/-    0.75  0.030 / 0.030
G10     14.5           62.8                0.9 +/-    0.69       1.0 +/-    0.69  0.030 / 0.030
G14     231.3          49.0                9.3 +/-    0.91      11.9 +/-    0.91  0.050 / 0.090
G18     317.7          13.3                3.0 +/-    1.53       7.8 +/-    1.53  0.050 / 0.120
G20     68.4           50.9                2.3 +/-    0.30       2.9 +/-    0.30  0.110 / 0.140
G21     147.4          36.9                4.2 +/-    1.21       6.4 +/-    1.21  0.090 / 0.110
G24     53.5           23.8                1.3 +/-    0.44       2.7 +/-    0.44  0.060 / 0.070
G27     254.0          31.0                8.2 +/-    1.35      14.2 +/-    1.35  0.050 / 0.080
G32     245.5          64.6                6.5 +/-    1.20       7.1 +/-    1.20  0.070 / 0.120