condition mean min max ZT0-3 1095.115 961.5 1228.73 ZT4-7 2989.8549999999996 2989.8549999999996 2989.8549999999996 ZT8-11 2608.9049999999997 2608.9049999999997 2608.9049999999997 ZT12-15 0 0 0 ZT16-19 145.061 145.061 145.061 ZT20-23 567.7529999999999 567.7529999999999 567.7529999999999