condition mean min max ZT0-3 17.4908457025 13.133847895 21.84784351 ZT4-7 19.41713356 16.873942245000002 21.960324874999998 ZT8-11 24.6345999275 23.57533527 25.693864585 ZT12-15 40.300919897499995 31.225666394999998 49.3761734 ZT16-19 41.436712709999995 38.722707299999996 44.15071812 ZT20-23 44.4289598775 42.64608816 46.211831595