condition mean min max ZT0-3 263.45000000000005 263.45000000000005 263.45000000000005 ZT4-7 221.6 221.6 221.6 ZT8-11 291.05 291.05 291.05 ZT12-15 359.45000000000005 359.45000000000005 359.45000000000005 ZT16-19 390.20000000000005 390.20000000000005 390.20000000000005 ZT20-23 366.0 366.0 366.0