condition mean min max ZT0-3 275.305355 275.305355 275.305355 ZT4-7 188.551285 188.551285 188.551285 ZT8-11 233.659426 233.659426 233.659426 ZT12-15 597.6355484999999 597.6355484999999 597.6355484999999 ZT16-19 362.1469975 362.1469975 362.1469975 ZT20-23 551.4037169999999 551.4037169999999 551.4037169999999