PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/09-11:57:40
G08     310.4          17.6                4.6 +/-    2.66      10.8 +/-    2.66  0.060 / 0.080
G10     335.5          60.5                3.8 +/-    0.63       4.3 +/-    0.63  0.070 / 0.070
G14     219.6          30.8                5.6 +/-    1.13       9.7 +/-    1.13  0.420 / 0.460
G20     85.6           9.6                -3.8 +/-   12.04     -10.8 +/-   12.04  0.130 / 0.360
G21     136.3          53.4                5.3 +/-    0.35       6.5 +/-    0.35  0.030 / 0.040
G24     71.9           30.1                4.8 +/-    1.04       8.3 +/-    1.04  0.040 / 0.040
G27     270.9          37.1                5.4 +/-    2.21       8.2 +/-    2.21  0.090 / 0.190
G32     225.6          55.6                6.6 +/-    2.47       7.8 +/-    2.47  0.090 / 0.150