condition mean min max ZT0-3 256.05 256.05 256.05 ZT4-7 216.9 216.9 216.9 ZT8-11 268.85 268.85 268.85 ZT12-15 269.7 269.7 269.7 ZT16-19 270.65 270.65 270.65 ZT20-23 320.29999999999995 320.29999999999995 320.29999999999995