condition mean min max ZT0-3 78.132575 75.54374999999999 80.7214 ZT4-7 155.727 155.727 155.727 ZT8-11 149.8315 149.8315 149.8315 ZT12-15 0 0 0 ZT16-19 78.64165 78.64165 78.64165 ZT20-23 55.85795 55.85795 55.85795