condition mean min max ZT0-3 213.57247 213.57247 213.57247 ZT4-7 195.96114699999998 195.96114699999998 195.96114699999998 ZT8-11 279.993701 279.993701 279.993701 ZT12-15 315.940877 315.940877 315.940877 ZT16-19 370.36650599999996 370.36650599999996 370.36650599999996 ZT20-23 525.7200185 525.7200185 525.7200185