PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/11-21:13:10
G01     225.3          18.5               12.2 +/-    2.01      27.8 +/-    2.01  0.030 / 0.030
G03     296.0          65.2               10.1 +/-    0.63      11.1 +/-    0.63  0.030 / 0.030
G14     81.6           29.5                9.8 +/-    1.62      17.4 +/-    1.62  0.090 / 0.100
G16     146.2          42.6               10.7 +/-    0.58      14.9 +/-    0.58  0.090 / 0.130
G22     227.8          72.3               10.6 +/-    0.57      11.1 +/-    0.57  0.050 / 0.070
G23     305.1          35.1               10.0 +/-    1.12      15.9 +/-    1.12  0.050 / 0.080
G26     102.9          53.6                8.6 +/-    0.41      10.5 +/-    0.41  0.040 / 0.030
G31     44.5           34.9                7.6 +/-    1.41      12.2 +/-    1.41  0.050 / 0.040