condition mean min max ZT0-3 134.05 134.05 134.05 ZT4-7 498.6 498.6 498.6 ZT8-11 592.55 592.55 592.55 ZT12-15 489.34999999999997 489.34999999999997 489.34999999999997 ZT16-19 105.2 105.2 105.2 ZT20-23 63.05 63.05 63.05