condition mean min max ZT0-3 298.52761 298.52761 298.52761 ZT4-7 191.1477795 191.1477795 191.1477795 ZT8-11 203.4431455 203.4431455 203.4431455 ZT12-15 242.095843 242.095843 242.095843 ZT16-19 237.417323 237.417323 237.417323 ZT20-23 269.11096349999997 269.11096349999997 269.11096349999997