PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-21:43:10
G03     227.0          65.0                9.2 +/-    1.37      10.0 +/-    1.37  0.070 / 0.050
G07     251.7          11.1               -5.2 +/-   18.08     -14.3 +/-   18.08  0.050 / 0.050
G09     308.6          27.9                6.7 +/-    2.03      12.2 +/-    2.03  0.120 / 0.420
G14     102.7          13.9                9.6 +/-    3.78      24.4 +/-    3.78  0.110 / 0.450
G16     109.8          61.6                9.2 +/-    0.52      10.3 +/-    0.52  0.050 / 0.050
G22     193.6          49.3               10.4 +/-    0.29      13.3 +/-    0.29  0.040 / 0.050
G23     323.6          53.5                7.9 +/-    0.34       9.6 +/-    0.34  0.040 / 0.030
G26     61.4           48.3                6.0 +/-    0.82       7.7 +/-    0.82  0.050 / 0.040
G31     55.4           15.5                5.9 +/-    1.42      14.4 +/-    1.42  0.050 / 0.060