condition mean min max ZT0-3 123.99362500000001 107.31925000000001 140.668 ZT4-7 22.979499999999998 22.979499999999998 22.979499999999998 ZT8-11 25.42525 25.42525 25.42525 ZT12-15 0 0 0 ZT16-19 39.487750000000005 39.487750000000005 39.487750000000005 ZT20-23 66.51689999999999 66.51689999999999 66.51689999999999