condition mean min max ZT0-3 426.3325 426.3325 426.3325 ZT4-7 289.067 289.067 289.067 ZT8-11 285.21849999999995 285.21849999999995 285.21849999999995 ZT12-15 419.308 419.308 419.308 ZT16-19 603.6895 603.6895 603.6895 ZT20-23 516.028 516.028 516.028