condition mean min max ZT0-3 557.55 557.55 557.55 ZT4-7 489.2 489.2 489.2 ZT8-11 653.4 653.4 653.4 ZT12-15 598.4000000000001 598.4000000000001 598.4000000000001 ZT16-19 716.45 716.45 716.45 ZT20-23 658.7 658.7 658.7