PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-14:13:10
G08     318.5          12.7                3.8 +/-    2.35      10.1 +/-    2.35  0.050 / 0.080
G10     312.6          56.0                3.5 +/-    1.96       4.1 +/-    1.96  0.040 / 0.050
G14     213.7          20.3                4.4 +/-    3.90       9.5 +/-    3.90  0.200 / 0.420
G15     45.5           17.8                3.9 +/-    1.91       9.0 +/-    1.91  0.270 / 0.480
G20     77.2           15.6                4.0 +/-    2.20       9.8 +/-    2.20  0.110 / 0.250
G21     122.1          63.2                5.8 +/-    0.31       6.4 +/-    0.31  0.110 / 0.240
G24     87.0           29.6                7.9 +/-    1.11      13.9 +/-    1.11  0.090 / 0.100
G27     287.0          37.7                3.8 +/-    1.75       5.8 +/-    1.75  0.100 / 0.070
G32     215.9          42.4                5.6 +/-    1.15       7.8 +/-    1.15  0.030 / 0.040