condition mean min max ZT0-3 183.17494265833335 171.97531715000002 194.37456816666668 ZT4-7 163.3751566 160.3859122 166.364401 ZT8-11 138.827499795 137.06382995666667 140.59116963333332 ZT12-15 130.5930152 125.270302 135.9157284 ZT16-19 118.95858659999999 116.6310323 121.28614089999999 ZT20-23 100.62736216333333 100.08257281666667 101.17215150999999