PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-21:57:50
G05     46.5           26.3               11.9 +/-    1.50      22.5 +/-    1.50  0.110 / 0.270
G13     85.1           37.3               16.0 +/-    0.75      24.3 +/-    0.75  0.120 / 0.290
G15     133.7          47.9               18.2 +/-    1.33      23.6 +/-    1.33  0.120 / 0.360
G18     240.3          37.2               15.5 +/-    0.89      23.6 +/-    0.89  0.110 / 0.480
G20     23.7           71.1               14.8 +/-    0.66      15.5 +/-    0.66  0.040 / 0.090
G21     307.9          43.9               13.6 +/-    1.38      18.6 +/-    1.38  0.040 / 0.080
G25     199.1          13.0               23.3 +/-    2.58      60.7 +/-    2.58  0.050 / 0.120
G26     295.9          19.5               12.8 +/-    2.26      28.5 +/-    2.26  0.060 / 0.110
G29     148.2          75.3               16.0 +/-    1.04      16.5 +/-    1.04  0.030 / 0.040