condition mean min max ZT0-3 228.0275 186.337 269.718 ZT4-7 278.764 278.764 278.764 ZT8-11 523.865 523.865 523.865 ZT12-15 0 0 0 ZT16-19 532.274 532.274 532.274 ZT20-23 358.807 358.807 358.807