condition mean min max ZT0-3 11653.6 11653.6 11653.6 ZT4-7 14232.5 14232.5 14232.5 ZT8-11 12557.05 12557.05 12557.05 ZT12-15 13641.3 13641.3 13641.3 ZT16-19 12605.85 12605.85 12605.85 ZT20-23 12564.0 12564.0 12564.0