PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-22:27:30
G01     228.3          19.3               10.1 +/-    3.14      22.5 +/-    3.14  0.110 / 0.180
G03     294.8          65.5                8.8 +/-    0.63       9.6 +/-    0.63  0.100 / 0.180
G14     84.1           25.5                8.8 +/-    2.88      16.9 +/-    2.88  0.230 / 0.330
G16     149.6          41.6               13.4 +/-    1.03      18.9 +/-    1.03  0.230 / 0.450
G22     226.9          72.7               10.0 +/-    0.51      10.4 +/-    0.51  0.030 / 0.020
G23     304.0          33.4                7.5 +/-    1.27      12.3 +/-    1.27  0.030 / 0.030
G26     106.5          53.9               10.0 +/-    0.59      12.0 +/-    0.59  0.050 / 0.080
G31     43.3           38.0                7.8 +/-    1.14      11.8 +/-    1.14  0.050 / 0.060