condition mean min max ZT0-3 0.35218299999999997 0.178054 0.5241235 ZT4-7 0.169485 0.169485 0.169485 ZT8-11 0.0 0.0 0.0 ZT12-15 0.16962824999999998 0.1675295 0.171727 ZT16-19 0.3327675 0.3327675 0.3327675 ZT20-23 0.5494725 0.5494725 0.5494725