PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/20-18:58:10
G01     307.9          33.1               10.4 +/-    1.11      17.1 +/-    1.11  0.090 / 0.120
G10     105.4          39.8               11.4 +/-    0.69      16.7 +/-    0.69  0.070 / 0.140
G11     281.0          28.4                9.5 +/-    1.24      17.2 +/-    1.24  0.040 / 0.050
G14     357.1          67.1                8.8 +/-    1.16       9.5 +/-    1.16  0.050 / 0.060
G18     273.5          51.5               12.8 +/-    1.45      15.8 +/-    1.45  0.050 / 0.060
G20     120.1          14.5               11.2 +/-    1.82      28.3 +/-    1.82  0.050 / 0.070
G22     309.6          25.0                8.9 +/-    1.64      17.3 +/-    1.64  0.080 / 0.200
G25     77.2           15.1                8.6 +/-    1.08      21.2 +/-    1.08  0.090 / 0.200
G31     173.9          60.8               12.4 +/-    1.22      14.0 +/-    1.22  0.090 / 0.180
G32     34.1           53.9                8.8 +/-    0.38      10.6 +/-    0.38  0.090 / 0.170