condition mean min max ZT0-3 50.8193 47.1376 54.501 ZT4-7 29.2982 29.2982 29.2982 ZT8-11 10.586400000000001 10.586400000000001 10.586400000000001 ZT12-15 0 0 0 ZT16-19 29.9448 29.9448 29.9448 ZT20-23 35.9043 35.9043 35.9043