condition mean min max ZT0-3 294.2 294.2 294.2 ZT4-7 190.0 190.0 190.0 ZT8-11 204.64999999999998 204.64999999999998 204.64999999999998 ZT12-15 414.4 414.4 414.4 ZT16-19 520.95 520.95 520.95 ZT20-23 359.04999999999995 359.04999999999995 359.04999999999995