date: 2013.04.04
format: id x y sx sy cxy
1  5000.020  1000.015 0.001 0.001 -0.0000005
2  5100.011  1200.014 0.005 0.002  0.0000001
3  4850.013   950.020 0.002 0.001 -0.0000001
