condition mean min max ZT0-3 128.28998612499998 123.61902509999999 132.96094715 ZT4-7 40.476693065 30.78386598 50.16952015 ZT8-11 58.8471876 42.27065483 75.42372037 ZT12-15 83.9037441025 79.031261215 88.77622699 ZT16-19 116.86768930000001 110.26941185000001 123.46596675 ZT20-23 99.87642063499999 92.96427152 106.78856975