PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-00:28:00
G10     285.2          46.7               12.8 +/-    1.25      16.9 +/-    1.25  0.050 / 0.050
G15     48.7           37.0               11.5 +/-    1.18      17.6 +/-    1.18  0.040 / 0.050
G18     336.4          66.8               12.2 +/-    0.39      13.2 +/-    0.39  0.050 / 0.040
G20     66.0           22.5               10.0 +/-    1.37      20.7 +/-    1.37  0.040 / 0.040
G21     64.8           77.0               14.0 +/-    0.66      14.4 +/-    0.66  0.090 / 0.200
G24     107.4          22.7               15.3 +/-    1.25      31.5 +/-    1.25  0.100 / 0.260
G27     307.0          31.1               13.1 +/-    1.75      22.3 +/-    1.75  0.090 / 0.280
G29     167.4          12.7               15.6 +/-    1.65      40.9 +/-    1.65  0.070 / 0.270
G32     208.3          22.5               15.5 +/-    3.09      32.0 +/-    3.09  0.050 / 0.090