PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-18:43:10
G01     316.2          24.1                8.4 +/-    1.04      16.7 +/-    1.04  0.100 / 0.180
G10     90.8           48.1                9.1 +/-    0.64      11.8 +/-    0.64  0.110 / 0.170
G11     294.6          26.6                7.7 +/-    1.47      14.4 +/-    1.47  0.040 / 0.040
G14     323.0          71.3                8.3 +/-    0.83       8.8 +/-    0.83  0.040 / 0.050
G18     293.4          47.8                7.5 +/-    1.68       9.8 +/-    1.68  0.050 / 0.050
G20     111.5          23.6                8.7 +/-    0.94      17.5 +/-    0.94  0.040 / 0.040
G22     304.4          15.5                6.1 +/-    3.67      15.0 +/-    3.67  0.100 / 0.250
G25     89.0           11.2              -10.1 +/-   35.36     -27.5 +/-   35.36  0.100 / 0.200
G31     177.8          46.9               10.4 +/-    1.27      13.6 +/-    1.27  0.110 / 0.350
G32     18.2           62.8                8.6 +/-    0.39       9.5 +/-    0.39  0.170 / 0.430