condition mean min max ZT0-3 1.68308 1.68308 1.68308 ZT4-7 4.806145 4.806145 4.806145 ZT8-11 5.6815 5.6815 5.6815 ZT12-15 2.0139 2.0139 2.0139 ZT16-19 0.949864 0.949864 0.949864 ZT20-23 0.89428 0.89428 0.89428