condition mean min max ZT0-3 275.956 275.956 275.956 ZT4-7 217.52800000000002 217.52800000000002 217.52800000000002 ZT8-11 253.56849999999997 253.56849999999997 253.56849999999997 ZT12-15 329.848 329.848 329.848 ZT16-19 390.09133333333335 390.09133333333335 390.09133333333335 ZT20-23 376.451 376.451 376.451