PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-16:28:00
G01     292.2          39.7               13.9 +/-    3.04      20.3 +/-    3.04  0.050 / 0.080
G03     312.1          19.0                7.4 +/-    2.00      16.7 +/-    2.00  0.060 / 0.100
G10     118.9          29.9               10.0 +/-    2.68      17.6 +/-    2.68  0.020 / 0.060
G11     269.3          25.9                7.9 +/-    1.09      15.1 +/-    1.09  0.030 / 0.020
G14     20.0           60.3                8.3 +/-    1.78       9.3 +/-    1.78  0.090 / 0.110
G22     313.9          39.0                6.3 +/-    1.50       9.3 +/-    1.50  0.100 / 0.130
G25     68.5           19.1                9.0 +/-    1.06      20.2 +/-    1.06  0.050 / 0.060
G26     156.7          12.7               12.8 +/-    2.52      33.7 +/-    2.52  0.060 / 0.060
G31     130.3          78.5               10.6 +/-    0.73      10.8 +/-    0.73  0.090 / 0.090
G32     50.7           42.1                6.9 +/-    1.78       9.7 +/-    1.78  0.070 / 0.090