PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-20:12:40
G01     238.4          30.3               10.7 +/-    2.15      18.6 +/-    2.15  0.040 / 0.050
G03     313.9          50.8               10.2 +/-    0.85      12.7 +/-    0.85  0.030 / 0.040
G14     65.7           39.0               10.1 +/-    1.66      14.9 +/-    1.66  0.050 / 0.090
G16     156.9          26.7               12.2 +/-    2.70      22.9 +/-    2.70  0.060 / 0.080
G22     288.1          72.0                9.7 +/-    0.45      10.1 +/-    0.45  0.100 / 0.220
G23     292.9          24.4                9.6 +/-    1.41      19.1 +/-    1.41  0.080 / 0.220
G26     127.9          44.7               11.8 +/-    0.97      16.0 +/-    0.97  0.040 / 0.050
G31     41.0           50.5                8.0 +/-    0.66      10.1 +/-    0.66  0.060 / 0.060
G32     84.7           16.0                9.8 +/-    2.09      23.8 +/-    2.09  0.070 / 0.130