The events are available as the acceptance corrected Dalitz plot with 825 cells.

The particles are counted as 1- pi0, 2 – pi-, 3 – pi0 and the data are given as:

825

s12 s23 s13 Fraction_of_cell_area Events Error Number of cells

s12 s23 s13 Fraction_of_cell_area Events Error Number of cells

……………..

Here The number of cells is a dummy number (=1).

The s12, s23 and s13 are invariant energies squared of the two meson system (MeV²)

and Fraction_of_cell_area is the ratio of cell area to the area of the largest cell.

For these data Fraction_of_cell_area=1: all cells at the boundary are removed.

The background level for these events is less then 1%.

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