condition mean min max ZT0-3 14.59195 14.59195 14.59195 ZT4-7 10.548745 10.548745 10.548745 ZT8-11 12.207550000000001 12.207550000000001 12.207550000000001 ZT12-15 13.9514 13.9514 13.9514 ZT16-19 16.5805 16.5805 16.5805 ZT20-23 14.41235 14.41235 14.41235