PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-10:42:30
G05     51.9           9.9                 2.6 +/-    4.31       7.3 +/-    4.31  0.170 / 0.360
G10     241.1          17.4                5.4 +/-    1.51      12.6 +/-    1.51  0.170 / 0.230
G13     67.3           35.7                3.7 +/-    1.14       5.8 +/-    1.14  0.050 / 0.050
G15     108.3          55.8                6.1 +/-    0.82       7.2 +/-    0.82  0.030 / 0.060
G16     308.9          13.6                2.6 +/-    1.78       6.7 +/-    1.78  0.120 / 0.200
G20     26.7           64.7                3.2 +/-    0.57       3.6 +/-    0.57  0.150 / 0.250
G21     322.6          53.7                3.4 +/-    0.60       4.1 +/-    0.60  0.040 / 0.030
G26     280.0          19.3                4.2 +/-    1.77       9.4 +/-    1.77  0.040 / 0.030
G29     159.4          62.0                6.5 +/-    0.35       7.3 +/-    0.35  0.060 / 0.080