condition mean min max ZT0-3 41.342926 41.342926 41.342926 ZT4-7 19.5901125 19.5901125 19.5901125 ZT8-11 25.766415000000002 25.766415000000002 25.766415000000002 ZT12-15 52.434599 52.434599 52.434599 ZT16-19 44.4242165 44.4242165 44.4242165 ZT20-23 85.097028 85.097028 85.097028