PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-15:27:30
G01     320.1          14.6                3.9 +/-    2.25       9.8 +/-    2.25  0.040 / 0.050
G08     263.1          14.9                7.3 +/-    2.17      18.2 +/-    2.17  0.030 / 0.040
G10     73.1           55.7                5.9 +/-    0.52       7.0 +/-    0.52  0.140 / 0.250
G11     308.3          19.3                7.1 +/-    1.48      15.8 +/-    1.48  0.180 / 0.250
G14     282.3          68.5                7.0 +/-    0.65       7.5 +/-    0.65  0.060 / 0.080
G27     225.9          10.9                7.4 +/-    3.49      20.2 +/-    3.49  0.040 / 0.070
G31     176.6          38.2               10.7 +/-    1.35      16.0 +/-    1.35  0.190 / 0.400
G32     0.7            69.8                6.7 +/-    0.99       7.0 +/-    0.99  0.220 / 0.410