condition mean min max ZT0-3 0.55744607675 0.344042822 0.7708493315 ZT4-7 1.0427631072499999 1.0062412995 1.079284915 ZT8-11 0.8286763975 0.796856961 0.8604958340000001 ZT12-15 3.14115678625 1.9560854239999999 4.3262281485 ZT16-19 4.843210716250001 4.1668633215 5.519558111 ZT20-23 6.146505364999999 5.957441833499999 6.3355688965