PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-20:27:40
G01     239.0          30.8               12.0 +/-    1.57      20.7 +/-    1.57  0.040 / 0.050
G03     314.2          50.2                9.8 +/-    1.07      12.3 +/-    1.07  0.040 / 0.050
G14     64.9           39.5                9.9 +/-    0.75      14.4 +/-    0.75  0.050 / 0.100
G16     157.2          26.2               12.4 +/-    1.92      23.5 +/-    1.92  0.050 / 0.100
G22     289.9          71.5                9.8 +/-    1.03      10.2 +/-    1.03  0.080 / 0.240
G23     292.5          24.0               -3.8 +/-    1.07      -7.7 +/-    1.07  0.060 / 0.220
G26     128.5          44.3               13.9 +/-    1.04      18.9 +/-    1.04  0.070 / 0.120
G31     41.0           50.9                8.2 +/-    0.96      10.2 +/-    0.96  0.070 / 0.130
G32     84.2           16.4               10.3 +/-    2.01      24.9 +/-    2.01  0.040 / 0.050