PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-08:12:40
G08     311.6          18.2                3.7 +/-    1.34       8.4 +/-    1.34  0.040 / 0.040
G10     328.9          59.7                3.2 +/-    0.64       3.7 +/-    0.64  0.040 / 0.040
G14     216.2          29.0                5.7 +/-    2.49      10.1 +/-    2.49  0.030 / 0.030
G15     46.5           11.5                2.6 +/-    3.23       7.0 +/-    3.23  0.030 / 0.030
G20     32.9           61.2                3.0 +/-    0.58       3.4 +/-    0.58  0.130 / 0.220
G21     131.6          57.6                9.0 +/-    0.95      10.5 +/-    0.95  0.110 / 0.190
G24     75.9           29.6                5.6 +/-    1.00       9.9 +/-    1.00  0.080 / 0.070
G27     280.5          37.3                7.7 +/-    2.11      11.7 +/-    2.11  0.150 / 0.070
G32     220.9          43.7                7.5 +/-    1.32      10.3 +/-    1.32  0.050 / 0.080