condition mean min max ZT0-3 167.83175 146.5745 189.089 ZT4-7 95.29975 95.29975 95.29975 ZT8-11 54.8418 54.8418 54.8418 ZT12-15 0 0 0 ZT16-19 119.044 119.044 119.044 ZT20-23 133.2335 133.2335 133.2335