condition mean min max ZT0-3 11.7103975 10.261769999999999 13.159025 ZT4-7 30.3461 30.3461 30.3461 ZT8-11 34.4345 34.4345 34.4345 ZT12-15 0 0 0 ZT16-19 15.56485 15.56485 15.56485 ZT20-23 17.10595 17.10595 17.10595