condition mean min max ZT0-3 16.144352 16.144352 16.144352 ZT4-7 32.133604000000005 32.133604000000005 32.133604000000005 ZT8-11 41.213779 41.213779 41.213779 ZT12-15 22.0325125 22.0325125 22.0325125 ZT16-19 17.3148615 17.3148615 17.3148615 ZT20-23 14.5658315 14.5658315 14.5658315