result =
	coeff_dxy_m1_m1_m1*data_m1_m1_m1
	+ coeff_dxy_0_m1_m1*data_0_m1_m1
	+ coeff_dxy_p1_m1_m1*data_p1_m1_m1
	+ coeff_dxy_m1_0_m1*data_m1_0_m1
	+ coeff_dxy_0_0_m1*data_0_0_m1
	+ coeff_dxy_p1_0_m1*data_p1_0_m1
	+ coeff_dxy_m1_p1_m1*data_m1_p1_m1
	+ coeff_dxy_0_p1_m1*data_0_p1_m1
	+ coeff_dxy_p1_p1_m1*data_p1_p1_m1
	+ coeff_dxy_m1_m1_0*data_m1_m1_0
	+ coeff_dxy_0_m1_0*data_0_m1_0
	+ coeff_dxy_p1_m1_0*data_p1_m1_0
	+ coeff_dxy_m1_0_0*data_m1_0_0
	+ coeff_dxy_0_0_0*data_0_0_0
	+ coeff_dxy_p1_0_0*data_p1_0_0
	+ coeff_dxy_m1_p1_0*data_m1_p1_0
	+ coeff_dxy_0_p1_0*data_0_p1_0
	+ coeff_dxy_p1_p1_0*data_p1_p1_0
	+ coeff_dxy_m1_m1_p1*data_m1_m1_p1
	+ coeff_dxy_0_m1_p1*data_0_m1_p1
	+ coeff_dxy_p1_m1_p1*data_p1_m1_p1
	+ coeff_dxy_m1_0_p1*data_m1_0_p1
	+ coeff_dxy_0_0_p1*data_0_0_p1
	+ coeff_dxy_p1_0_p1*data_p1_0_p1
	+ coeff_dxy_m1_p1_p1*data_m1_p1_p1
	+ coeff_dxy_0_p1_p1*data_0_p1_p1
	+ coeff_dxy_p1_p1_p1*data_p1_p1_p1;