PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-21:43:10
G05     46.2           27.2               13.2 +/-    0.67      24.5 +/-    0.67  0.090 / 0.210
G13     86.2           37.2               17.3 +/-    0.43      26.4 +/-    0.43  0.110 / 0.240
G15     134.4          47.3               19.5 +/-    1.44      25.5 +/-    1.44  0.180 / 0.390
G18     239.7          36.6               17.4 +/-    2.43      26.7 +/-    2.43  0.170 / 0.420
G20     22.7           72.0               17.4 +/-    0.76      18.2 +/-    0.76  0.050 / 0.150
G21     307.3          43.5               16.7 +/-    1.14      23.0 +/-    1.14  0.050 / 0.120
G25     199.6          13.7               21.0 +/-    2.15      53.9 +/-    2.15  0.030 / 0.040
G26     296.7          19.4               15.7 +/-    1.54      35.2 +/-    1.54  0.020 / 0.030
G29     147.0          76.0               18.6 +/-    0.30      19.1 +/-    0.30  0.070 / 0.110