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 +/-    1.47      12.9 +/-    1.47  0.050 / 0.090
G10     14.5           62.8                2.8 +/-    1.17       3.1 +/-    1.17  0.050 / 0.090
G14     231.3          49.0                8.7 +/-    2.55      11.1 +/-    2.55  0.030 / 0.030
G18     317.7          13.3                1.9 +/-    0.98       5.0 +/-    0.98  0.040 / 0.030
G20     68.4           50.9                3.2 +/-    0.85       4.0 +/-    0.85  0.100 / 0.100
G21     147.4          36.9                4.8 +/-    0.95       7.4 +/-    0.95  0.080 / 0.130
G24     53.5           23.8                2.0 +/-    1.96       4.0 +/-    1.96  0.110 / 0.120
G27     254.0          31.0                8.0 +/-    3.06      13.7 +/-    3.06  0.090 / 0.110
G32     245.5          64.6                8.1 +/-    0.56       8.9 +/-    0.56  0.120 / 0.180