condition mean min max ZT0-3 0.76231925 0.43150849999999996 1.09313 ZT4-7 1.4472649999999998 1.4472649999999998 1.4472649999999998 ZT8-11 0.8336570000000001 0.8336570000000001 0.8336570000000001 ZT12-15 0 0 0 ZT16-19 0.8602825000000001 0.8602825000000001 0.8602825000000001 ZT20-23 0.562575 0.562575 0.562575