PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/11-21:27:50
G01     220.9          14.0               12.4 +/-    2.34      31.6 +/-    2.34  0.050 / 0.050
G03     280.9          68.8                8.3 +/-    0.66       8.8 +/-    0.66  0.050 / 0.040
G09     297.6          14.3               10.3 +/-    1.14      26.1 +/-    1.14  0.210 / 0.430
G14     87.3           25.6               10.2 +/-    1.09      19.6 +/-    1.09  0.150 / 0.360
G16     140.2          48.5               11.2 +/-    1.03      14.3 +/-    1.03  0.110 / 0.210
G22     212.4          67.6               10.7 +/-    0.62      11.5 +/-    0.62  0.090 / 0.200
G23     309.7          39.6                9.8 +/-    0.81      14.4 +/-    0.81  0.040 / 0.080
G26     91.0           54.5                7.9 +/-    0.39       9.5 +/-    0.39  0.040 / 0.070
G31     46.8           29.5                6.0 +/-    1.01      10.6 +/-    1.01  0.030 / 0.040