PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-13:57:50
G08     303.9          20.4                4.0 +/-    2.08       8.7 +/-    2.08  0.070 / 0.110
G10     347.8          61.9                2.0 +/-    0.45       2.2 +/-    0.45  0.070 / 0.110
G14     223.4          37.3                5.3 +/-    0.82       8.1 +/-    0.82  0.050 / 0.110
G21     140.9          46.3                6.3 +/-    0.53       8.3 +/-    0.53  0.060 / 0.080
G24     65.3           29.1                4.5 +/-    0.28       8.0 +/-    0.28  0.050 / 0.090
G27     262.9          35.3                5.0 +/-    0.67       7.9 +/-    0.67  0.050 / 0.080
G32     232.6          60.9                6.8 +/-    1.00       7.6 +/-    1.00  0.150 / 0.300