condition mean min max ZT0-3 0.101059225 0.06828565 0.1338328 ZT4-7 0.1368225 0.1368225 0.1368225 ZT8-11 0.20385489999999998 0.20385489999999998 0.20385489999999998 ZT12-15 0 0 0 ZT16-19 0.3580865 0.3580865 0.3580865 ZT20-23 0.38295049999999997 0.38295049999999997 0.38295049999999997