condition mean min max ZT0-3 268.05 268.05 268.05 ZT4-7 336.4 336.4 336.4 ZT8-11 308.95000000000005 308.95000000000005 308.95000000000005 ZT12-15 176.20000000000002 176.20000000000002 176.20000000000002 ZT16-19 240.05 240.05 240.05 ZT20-23 407.05 407.05 407.05