condition mean min max ZT0-3 1628.5500000000002 1628.5500000000002 1628.5500000000002 ZT4-7 3944.1 3944.1 3944.1 ZT8-11 3277.95 3277.95 3277.95 ZT12-15 2432.3 2432.3 2432.3 ZT16-19 1448.0500000000002 1448.0500000000002 1448.0500000000002 ZT20-23 1182.3 1182.3 1182.3