condition mean min max ZT0-3 0.50909325 0.4317965 0.58639 ZT4-7 0.49622449999999996 0.49622449999999996 0.49622449999999996 ZT8-11 1.556279 1.556279 1.556279 ZT12-15 0 0 0 ZT16-19 0.9148415000000001 0.9148415000000001 0.9148415000000001 ZT20-23 1.082895 1.082895 1.082895