condition mean min max ZT0-3 659.15 659.15 659.15 ZT4-7 408.0 408.0 408.0 ZT8-11 349.70000000000005 349.70000000000005 349.70000000000005 ZT12-15 438.15 438.15 438.15 ZT16-19 489.2 489.2 489.2 ZT20-23 632.05 632.05 632.05