PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-18:27:50
G01     306.9          35.2                6.3 +/-    1.32       9.9 +/-    1.32  0.090 / 0.140
G10     105.0          38.7               10.8 +/-    0.77      16.0 +/-    0.77  0.090 / 0.180
G11     287.5          25.4               10.6 +/-    1.10      20.4 +/-    1.10  0.040 / 0.050
G14     341.8          68.6                8.1 +/-    0.58       8.7 +/-    0.58  0.040 / 0.050
G20     120.6          11.8               10.7 +/-    2.04      28.7 +/-    2.04  0.060 / 0.150
G22     309.6          23.8                7.9 +/-    1.63      15.9 +/-    1.63  0.070 / 0.170
G25     83.5           15.6                8.9 +/-    1.04      21.9 +/-    1.04  0.060 / 0.130
G31     168.3          62.7               12.0 +/-    0.79      13.4 +/-    0.79  0.060 / 0.100
G32     36.5           52.1                8.0 +/-    0.43       9.8 +/-    0.43  0.050 / 0.070