PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-20:12:50
G01     245.8          35.1               11.6 +/-    0.88      18.3 +/-    0.88  0.040 / 0.050
G03     316.2          43.7                7.6 +/-    1.88      10.5 +/-    1.88  0.040 / 0.040
G11     240.3          10.6               10.2 +/-    2.44      28.0 +/-    2.44  0.050 / 0.100
G14     57.8           43.5                9.2 +/-    0.82      12.6 +/-    0.82  0.050 / 0.100
G16     160.6          20.0                9.8 +/-    2.82      21.5 +/-    2.82  0.140 / 0.310
G22     303.2          66.2                9.0 +/-    0.63       9.7 +/-    0.63  0.120 / 0.300
G23     287.4          19.9               -1.6 +/-    1.56      -3.6 +/-    1.56  0.090 / 0.120
G26     135.6          39.0               12.5 +/-    1.01      18.5 +/-    1.01  0.080 / 0.110
G31     41.5           57.7                9.1 +/-    0.88      10.5 +/-    0.88  0.040 / 0.070
G32     78.8           20.5                9.5 +/-    1.46      20.7 +/-    1.46  0.050 / 0.080