condition mean min max ZT0-3 5847.35 5847.35 5847.35 ZT4-7 11011.2 11011.2 11011.2 ZT8-11 13234.7 13234.7 13234.7 ZT12-15 13599.05 13599.05 13599.05 ZT16-19 11510.400000000001 11510.400000000001 11510.400000000001 ZT20-23 8222.45 8222.45 8222.45