PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-19:27:50
G01     307.8          33.1                6.9 +/-    1.45      11.3 +/-    1.45  0.080 / 0.130
G10     105.6          39.7                9.2 +/-    0.34      13.4 +/-    0.34  0.080 / 0.130
G11     280.8          28.4                7.8 +/-    0.92      14.1 +/-    0.92  0.050 / 0.060
G14     357.3          67.1                5.8 +/-    0.98       6.2 +/-    0.98  0.050 / 0.070
G18     273.6          51.4               10.3 +/-    1.30      12.8 +/-    1.30  0.040 / 0.060
G20     120.2          14.4                8.4 +/-    2.46      21.1 +/-    2.46  0.040 / 0.040
G22     309.6          25.0                6.5 +/-    2.19      12.6 +/-    2.19  0.090 / 0.180
G25     76.7           15.1                7.0 +/-    0.74      17.5 +/-    0.74  0.080 / 0.180
G31     173.2          61.4                9.1 +/-    0.81      10.2 +/-    0.81  0.120 / 0.150
G32     34.5           53.6                6.2 +/-    0.38       7.5 +/-    0.38  0.100 / 0.140