PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/21-00:12:50
G01     272.3          41.4               10.2 +/-    1.05      14.5 +/-    1.05  0.040 / 0.070
G03     315.5          27.4                6.9 +/-    1.02      12.8 +/-    1.02  0.050 / 0.050
G10     129.0          17.3               12.7 +/-    1.66      29.8 +/-    1.66  0.050 / 0.090
G11     250.1          20.4               12.0 +/-    1.66      26.2 +/-    1.66  0.080 / 0.090
G14     41.9           50.8                8.8 +/-    0.35      11.0 +/-    0.35  0.050 / 0.070
G18     233.0          39.5               12.6 +/-    1.07      18.5 +/-    1.07  0.040 / 0.070
G22     314.2          49.7                8.4 +/-    0.60      10.7 +/-    0.60  0.110 / 0.340
G25     50.6           15.1                7.0 +/-    1.80      17.4 +/-    1.80  0.080 / 0.300
G31     59.7           75.6               10.7 +/-    0.94      11.1 +/-    0.94  0.100 / 0.230
G32     63.4           32.7                8.8 +/-    0.68      14.6 +/-    0.68  0.090 / 0.220