condition mean min max ZT0-3 3403.8 3403.8 3403.8 ZT4-7 4654.9 4654.9 4654.9 ZT8-11 5603.65 5603.65 5603.65 ZT12-15 5563.9 5563.9 5563.9 ZT16-19 4509.45 4509.45 4509.45 ZT20-23 3646.1499999999996 3646.1499999999996 3646.1499999999996