condition mean min max ZT0-3 391.5845 391.5845 391.5845 ZT4-7 372.4145 372.4145 372.4145 ZT8-11 257.104 257.104 257.104 ZT12-15 281.62350000000004 281.62350000000004 281.62350000000004 ZT16-19 273.0255 273.0255 273.0255 ZT20-23 379.824 379.824 379.824