PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/04-19:27:50
G01     227.5          18.1                9.9 +/-    2.14      22.9 +/-    2.14  0.040 / 0.110
G03     286.5          68.7                8.6 +/-    1.13       9.2 +/-    1.13  0.050 / 0.090
G14     84.9           26.0               10.1 +/-    0.92      19.3 +/-    0.92  0.030 / 0.040
G16     149.6          43.1               12.1 +/-    1.08      16.8 +/-    1.08  0.030 / 0.050
G22     217.3          71.6               10.7 +/-    1.22      11.2 +/-    1.22  0.100 / 0.200
G23     306.7          37.0                8.5 +/-    0.75      13.1 +/-    0.75  0.100 / 0.240
G26     100.1          54.0               10.0 +/-    0.45      12.0 +/-    0.45  0.040 / 0.080
G31     44.6           33.4                6.8 +/-    0.70      11.2 +/-    0.70  0.040 / 0.080