PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-18:12:50
G10     279.3          44.1               12.5 +/-    1.06      17.0 +/-    1.06  0.070 / 0.080
G13     38.5           10.8               11.4 +/-    2.23      31.2 +/-    2.23  0.070 / 0.150
G15     50.1           38.7               12.7 +/-    0.77      18.8 +/-    0.77  0.030 / 0.030
G18     330.2          67.1               11.6 +/-    0.38      12.5 +/-    0.38  0.030 / 0.030
G20     61.5           28.3               10.8 +/-    1.71      19.6 +/-    1.71  0.130 / 0.200
G21     58.1           75.7               13.7 +/-    1.13      14.1 +/-    1.13  0.130 / 0.160
G24     112.0          20.2               16.9 +/-    1.58      37.1 +/-    1.58  0.070 / 0.140
G27     311.2          28.0               10.0 +/-    1.52      18.3 +/-    1.52  0.080 / 0.120
G29     166.3          15.1               14.9 +/-    2.10      37.0 +/-    2.10  0.100 / 0.270
G32     207.0          17.8               14.5 +/-    1.37      33.6 +/-    1.37  0.080 / 0.460