PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-00:27:50
G01     116.8          19.6                9.0 +/-    1.24      20.1 +/-    1.24  0.050 / 0.070
G07     86.6           65.3                7.3 +/-    0.20       7.9 +/-    0.20  0.040 / 0.090
G08     44.5           31.1                5.8 +/-    0.78       9.9 +/-    0.78  0.040 / 0.040
G09     177.4          24.3                5.9 +/-    1.77      11.8 +/-    1.77  0.040 / 0.070
G11     106.7          40.8                8.2 +/-    0.71      11.8 +/-    0.71  0.050 / 0.160
G13     316.8          20.7                3.8 +/-    1.91       8.3 +/-    1.91  0.040 / 0.110
G17     202.9          26.1                8.2 +/-    1.86      15.6 +/-    1.86  0.110 / 0.200
G28     298.9          58.7                6.1 +/-    0.68       7.0 +/-    0.68  0.120 / 0.170
G30     5.7            73.3                6.9 +/-    0.56       7.2 +/-    0.56  0.040 / 0.080