PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-18:12:40
G01     306.3          35.6                7.5 +/-    1.26      11.8 +/-    1.26  0.070 / 0.130
G10     105.6          38.2                9.3 +/-    1.07      13.9 +/-    1.07  0.070 / 0.150
G11     287.0          25.4                7.8 +/-    1.91      15.1 +/-    1.91  0.040 / 0.050
G14     343.9          68.4                7.0 +/-    0.53       7.4 +/-    0.53  0.040 / 0.040
G20     121.0          11.3                9.5 +/-    2.29      25.7 +/-    2.29  0.080 / 0.170
G22     309.8          24.4                6.4 +/-    0.85      12.7 +/-    0.85  0.100 / 0.200
G25     82.8           15.8                9.2 +/-    2.51      22.4 +/-    2.51  0.060 / 0.060
G31     168.1          63.3                9.1 +/-    0.58      10.0 +/-    0.58  0.050 / 0.050
G32     37.2           51.6                7.7 +/-    1.17       9.5 +/-    1.17  0.050 / 0.030