PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-16:57:40
G02     60.3           32.0               12.1 +/-    1.54      20.3 +/-    1.54  0.020 / 0.040
G05     60.3           63.7               12.5 +/-    0.58      13.8 +/-    0.58  0.030 / 0.040
G12     185.8          32.7               14.2 +/-    1.13      23.5 +/-    1.13  0.040 / 0.060
G13     129.4          15.4               15.7 +/-    2.75      38.7 +/-    2.75  0.040 / 0.050
G15     163.1          12.5               16.2 +/-    2.34      42.6 +/-    2.34  0.100 / 0.280
G20     208.3          60.2               15.7 +/-    0.62      17.8 +/-    0.62  0.080 / 0.250
G21     272.3          19.6               11.9 +/-    1.54      26.5 +/-    1.54  0.050 / 0.110
G25     232.8          51.0               15.0 +/-    1.97      18.7 +/-    1.97  0.050 / 0.120
G29     333.6          60.1               13.4 +/-    1.15      15.2 +/-    1.15  0.040 / 0.060