condition mean min max ZT0-3 992.281 992.281 992.281 ZT4-7 1264.83 1264.83 1264.83 ZT8-11 737.6105 737.6105 737.6105 ZT12-15 331.7115 331.7115 331.7115 ZT16-19 298.6875 298.6875 298.6875 ZT20-23 672.3865000000001 672.3865000000001 672.3865000000001