Ok, I found the table was broken, I'm resending it: Thommen 7150+ delta% 0.10 0.099 -1.010 1.00 0.996 -0.402 5.00 4.996 -0.080 10.00 9.997 -0.030 20.00 19.998 -0.010 50.00 50.003 0.006 100.00 100.011 0.011 123.45 123.456 0.005 200.00 200.020 0.010 500.00 500.057 0.011 900.00 900.067 0.007 1000.00 1000.080 0.008 .     ciao _       Elio.