condition mean min max ZT0-3 0.80581375 0.757555 0.8540725 ZT4-7 1.049101 1.049101 1.049101 ZT8-11 0.6385205 0.6385205 0.6385205 ZT12-15 0 0 0 ZT16-19 1.251425 1.251425 1.251425 ZT20-23 1.2239 1.2239 1.2239