condition mean min max ZT0-3 65.8264 65.8264 65.8264 ZT4-7 112.53999999999999 112.53999999999999 112.53999999999999 ZT8-11 63.44225 63.44225 63.44225 ZT12-15 34.8957 34.8957 34.8957 ZT16-19 15.038499999999999 15.038499999999999 15.038499999999999 ZT20-23 21.688650000000003 21.688650000000003 21.688650000000003