Here, based on the hair lenght measurements (3_2_3_a) the increasing factor in hair length was calculated, dividing the length Median of the first row by the length Median of the last row.
Explanation of the table 3_2_3_b_IncrFactor.ods
1: Trap no: Number of the trap
2/3: Lmin/max in (µm): Median of the first/ last row
4. Factor: ratio between Lmin and Lmax