PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-08:58:10
G08     272.7          20.4                5.7 +/-    1.37      12.5 +/-    1.37  0.150 / 0.250
G10     52.2           59.5                4.3 +/-    0.40       4.9 +/-    0.40  0.100 / 0.290
G14     255.5          63.5                5.9 +/-    0.66       6.5 +/-    0.66  0.030 / 0.030
G18     314.5          28.9                5.0 +/-    1.87       8.9 +/-    1.87  0.030 / 0.040
G20     89.9           40.1                6.4 +/-    0.48       9.3 +/-    0.48  0.080 / 0.130
G21     153.5          19.4                6.7 +/-    2.27      15.0 +/-    2.27  0.080 / 0.130
G24     41.7           13.0                1.2 +/-    0.70       3.2 +/-    0.70  0.050 / 0.060
G27     237.5          20.2                5.7 +/-    1.69      12.5 +/-    1.69  0.050 / 0.060
G31     179.7          24.2                6.5 +/-    1.20      12.9 +/-    1.20  0.080 / 0.150
G32     297.3          74.5                6.6 +/-    0.58       6.8 +/-    0.58  0.100 / 0.150