condition mean min max ZT0-3 432.25 432.25 432.25 ZT4-7 382.4 382.4 382.4 ZT8-11 276.05 276.05 276.05 ZT12-15 572.45 572.45 572.45 ZT16-19 429.29999999999995 429.29999999999995 429.29999999999995 ZT20-23 625.7 625.7 625.7