condition mean min max ZT0-3 159.4965 138.61399999999998 180.37900000000002 ZT4-7 452.38800000000003 452.38800000000003 452.38800000000003 ZT8-11 605.5840000000001 605.5840000000001 605.5840000000001 ZT12-15 0 0 0 ZT16-19 327.451 327.451 327.451 ZT20-23 237.476 237.476 237.476