PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-08:57:40
G08     273.1          20.5                6.5 +/-    1.27      14.0 +/-    1.27  0.030 / 0.020
G10     51.3           59.6                5.2 +/-    0.84       6.0 +/-    0.84  0.030 / 0.030
G14     254.6          63.2                6.5 +/-    0.84       7.2 +/-    0.84  0.110 / 0.280
G18     314.7          28.5                3.1 +/-    1.90       5.6 +/-    1.90  0.120 / 0.300
G20     89.4           40.4                5.6 +/-    0.88       8.1 +/-    0.88  0.100 / 0.280
G21     153.4          19.9                6.3 +/-    2.93      14.0 +/-    2.93  0.140 / 0.270
G24     42.0           13.3                1.8 +/-    3.77       4.6 +/-    3.77  0.060 / 0.060
G27     237.9          20.5                6.6 +/-    2.61      14.3 +/-    2.61  0.060 / 0.060
G31     179.8          23.7                7.0 +/-    0.96      14.0 +/-    0.96  0.160 / 0.480
G32     295.4          74.4                6.8 +/-    0.59       7.0 +/-    0.59  0.150 / 0.110