condition mean min max ZT0-3 282.2 282.2 282.2 ZT4-7 476.6 476.6 476.6 ZT8-11 411.29999999999995 411.29999999999995 411.29999999999995 ZT12-15 214.4 214.4 214.4 ZT16-19 195.15 195.15 195.15 ZT20-23 265.0 265.0 265.0