condition mean min max ZT0-3 530.8 530.8 530.8 ZT4-7 438.2 438.2 438.2 ZT8-11 388.65 388.65 388.65 ZT12-15 423.15 423.15 423.15 ZT16-19 544.25 544.25 544.25 ZT20-23 608.6500000000001 608.6500000000001 608.6500000000001