condition mean min max ZT0-3 739.35 739.35 739.35 ZT4-7 750.9 750.9 750.9 ZT8-11 828.3499999999999 828.3499999999999 828.3499999999999 ZT12-15 801.6 801.6 801.6 ZT16-19 941.3000000000001 941.3000000000001 941.3000000000001 ZT20-23 812.4 812.4 812.4