PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-09:57:40
G08     279.0          22.2                6.5 +/-    1.28      13.6 +/-    1.28  0.120 / 0.170
G10     38.5           61.4                6.3 +/-    0.93       7.1 +/-    0.93  0.110 / 0.180
G14     244.5          58.6                8.3 +/-    1.10       9.5 +/-    1.10  0.030 / 0.030
G18     316.4          23.4                4.5 +/-    1.83       9.2 +/-    1.83  0.040 / 0.030
G20     82.5           44.3                7.0 +/-    1.09       9.5 +/-    1.09  0.030 / 0.030
G21     151.5          25.2                4.3 +/-    1.11       8.4 +/-    1.11  0.030 / 0.020
G24     45.2           17.2                4.6 +/-    2.36      10.9 +/-    2.36  0.060 / 0.050
G27     243.4          24.5                6.9 +/-    1.86      13.7 +/-    1.86  0.050 / 0.050
G31     181.6          17.2                5.2 +/-    2.16      12.3 +/-    2.16  0.130 / 0.170
G32     271.1          71.6                7.8 +/-    0.42       8.2 +/-    0.42  0.180 / 0.140