condition mean min max ZT0-3 263.88568333333336 46.85655 391.65200000000004 ZT4-7 147.852 147.852 147.852 ZT8-11 276.387 276.387 276.387 ZT12-15 247.24984999999998 120.00919999999999 374.4905 ZT16-19 593.7025 593.7025 593.7025 ZT20-23 662.494 662.494 662.494