PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-15:13:10
G01     320.7          12.4                3.3 +/-    3.59       8.8 +/-    3.59  0.200 / 0.410
G08     265.6          16.1                7.7 +/-    1.56      18.6 +/-    1.56  0.140 / 0.510
G10     68.5           56.9                4.3 +/-    0.62       5.1 +/-    0.62  0.050 / 0.080
G11     310.3          17.8                5.3 +/-    1.71      12.4 +/-    1.71  0.050 / 0.090
G14     275.3          67.3                6.2 +/-    0.68       6.7 +/-    0.68  0.040 / 0.060
G27     227.7          12.6                7.1 +/-    6.78      18.6 +/-    6.78  0.030 / 0.040
G31     177.1          35.4                9.1 +/-    1.32      14.4 +/-    1.32  0.030 / 0.030
G32     354.3          71.5                5.7 +/-    0.44       6.0 +/-    0.44  0.030 / 0.040