condition mean min max ZT0-3 7.0296025 5.92215 8.137055 ZT4-7 8.316075000000001 8.316075000000001 8.316075000000001 ZT8-11 9.32151 9.32151 9.32151 ZT12-15 0 0 0 ZT16-19 11.58197 11.58197 11.58197 ZT20-23 10.36102 10.36102 10.36102