PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-22:12:50
G05     46.3           26.6               10.2 +/-    1.51      19.3 +/-    1.51  0.160 / 0.410
G13     85.9           37.2               12.5 +/-    0.73      19.1 +/-    0.73  0.140 / 0.370
G15     134.7          47.3               14.5 +/-    2.06      19.0 +/-    2.06  0.050 / 0.090
G18     239.8          36.6               13.4 +/-    1.64      20.6 +/-    1.64  0.040 / 0.100
G20     23.2           71.6               12.5 +/-    0.60      13.1 +/-    0.60  0.050 / 0.120
G21     307.3          43.5               12.5 +/-    1.48      17.2 +/-    1.48  0.050 / 0.120
G25     199.2          13.4               15.5 +/-    1.70      40.1 +/-    1.70  0.050 / 0.120
G26     296.3          19.5               11.6 +/-    1.94      25.8 +/-    1.94  0.050 / 0.090