condition mean min max ZT0-3 3029.25 3029.25 3029.25 ZT4-7 4277.1 4277.1 4277.1 ZT8-11 4255.8 4255.8 4255.8 ZT12-15 2679.9 2679.9 2679.9 ZT16-19 2064.6499999999996 2064.6499999999996 2064.6499999999996 ZT20-23 2336.75 2336.75 2336.75