PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-08:13:00
G08     320.1          11.0               -8.0 +/-   24.74     -22.0 +/-   24.74  0.050 / 0.070
G10     312.5          56.0                5.0 +/-    1.81       5.9 +/-    1.81  0.050 / 0.060
G14     213.9          17.2                5.7 +/-    1.80      13.3 +/-    1.80  0.130 / 0.300
G15     45.6           19.1                3.2 +/-    2.68       7.3 +/-    2.68  0.120 / 0.250
G20     61.9           41.5                4.7 +/-    1.16       6.6 +/-    1.16  0.060 / 0.070
G21     120.1          66.8                7.3 +/-    0.49       7.8 +/-    0.49  0.050 / 0.080
G24     86.5           29.3                7.4 +/-    0.84      13.1 +/-    0.84  0.080 / 0.090
G27     288.1          37.4                8.0 +/-    1.28      12.1 +/-    1.28  0.110 / 0.090
G32     215.4          43.4                8.2 +/-    0.90      11.3 +/-    0.90  0.030 / 0.040