condition mean min max ZT0-3 35.185874999999996 30.9062 39.46554999999999 ZT4-7 73.4516 73.4516 73.4516 ZT8-11 100.23685 100.23685 100.23685 ZT12-15 0 0 0 ZT16-19 35.63545 35.63545 35.63545 ZT20-23 41.76565 41.76565 41.76565