The invention provides a red fluorescent material of which the chemical formula is 2+m4\u22122b7\u2212c\u2212zcZ. The pockets of one column are offset from the pockets of the other column so that when folded vertically the pockets of one column lie between the pockets of the other column. A reference beam pattern generates a reference beam. After that, the honeycomb body 100 is fired. An electric pump is disposed in the middle of a pipe line for the circulation of the cooling water. A conditional random field is used to force a global part labeling which is substantially layout-consistent and a part label map is inferred from this.