PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-15:12:40
G02     20.3           65.8                3.3 +/-    2.40       3.5 +/-    2.40  0.030 / 0.040
G05     158.5          48.4                4.2 +/-    7.78       5.5 +/-    7.78  0.040 / 0.050
G06     47.1           27.9                2.8 +/-   12.47       5.2 +/-   12.47  0.030 / 0.030
G12     242.7          78.8                3.9 +/-    2.48       3.9 +/-    2.48  0.020 / 0.030
G19     90.7           15.9                6.4 +/-    3.03      15.5 +/-    3.03  0.110 / 0.500
G20     197.9          13.8                5.0 +/-    8.22      12.7 +/-    8.22  0.150 / 0.470
G24     218.0          11.9                4.8 +/-   12.96      12.9 +/-   12.96  0.080 / 0.400
G25     309.7          45.7                4.9 +/-   11.20       6.5 +/-   11.20  0.110 / 0.280
G29     300.7          23.6                4.8 +/-    3.23       9.7 +/-    3.23  0.060 / 0.080