PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-22:42:50
G05     46.6           25.7                8.6 +/-    1.40      16.5 +/-    1.40  0.070 / 0.080
G13     85.0           37.2               11.4 +/-    0.87      17.4 +/-    0.87  0.050 / 0.070
G15     134.4          47.7               13.9 +/-    1.03      18.0 +/-    1.03  0.140 / 0.220
G18     240.2          36.9               12.4 +/-    0.98      19.0 +/-    0.98  0.110 / 0.320
G20     24.1           70.9                9.8 +/-    0.64      10.3 +/-    0.64  0.150 / 0.440
G21     307.7          43.7                8.6 +/-    1.10      11.8 +/-    1.10  0.230 / 0.450
G25     198.6          12.7               13.9 +/-    2.37      36.5 +/-    2.37  0.140 / 0.140
G26     295.5          19.7                9.4 +/-    1.20      20.9 +/-    1.20  0.100 / 0.110
G29     148.6          75.8               10.5 +/-    0.53      10.8 +/-    0.53  0.030 / 0.030