condition mean min max ZT0-3 0.0461214 0.0461214 0.0461214 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0331227 0.0331227 0.0331227 ZT16-19 0.0100892 0.0100892 0.0100892 ZT20-23 0.0 0.0 0.0