condition mean min max ZT0-3 50.609460665 50.20025895 51.018662379999995 ZT4-7 80.24541740833334 65.11730347 95.37353134666667 ZT8-11 171.05603811499998 149.00253593 193.1095403 ZT12-15 197.55043468333335 195.5824625666667 199.5184068 ZT16-19 168.35203048333332 167.68800246666666 169.01605849999999 ZT20-23 108.77149206833334 90.41207153666667 127.1309126