condition mean min max ZT0-3 35.449999999999996 35.449999999999996 35.449999999999996 ZT4-7 98.7 98.7 98.7 ZT8-11 127.55000000000001 127.55000000000001 127.55000000000001 ZT12-15 141.25 141.25 141.25 ZT16-19 145.55 145.55 145.55 ZT20-23 79.85 79.85 79.85