PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-15:12:40
G01     320.4          13.6                3.4 +/-    1.49       8.9 +/-    1.49  0.210 / 0.410
G08     264.4          15.5                5.5 +/-    3.67      13.6 +/-    3.67  0.180 / 0.340
G10     71.0           56.3                6.3 +/-    0.61       7.5 +/-    0.61  0.030 / 0.040
G11     309.3          18.5                6.7 +/-    2.75      15.3 +/-    2.75  0.040 / 0.030
G14     278.8          67.9                7.4 +/-    0.48       7.9 +/-    0.48  0.140 / 0.350
G27     226.7          11.7                7.7 +/-    2.32      20.6 +/-    2.32  0.110 / 0.330
G31     176.8          37.0                9.2 +/-    2.20      14.0 +/-    2.20  0.050 / 0.080
G32     357.9          70.6                6.9 +/-    0.32       7.3 +/-    0.32  0.050 / 0.060