condition mean min max ZT0-3 61.9554 61.9554 61.9554 ZT4-7 119.9315 119.9315 119.9315 ZT8-11 103.58000000000001 103.58000000000001 103.58000000000001 ZT12-15 50.80415 50.80415 50.80415 ZT16-19 33.15105 33.15105 33.15105 ZT20-23 36.86775 36.86775 36.86775