condition mean min max ZT0-3 914.586333975 212.821097 1616.35157095 ZT4-7 4479.4921095 4194.2828625 4764.7013565 ZT8-11 4230.175526000001 3504.3828270000004 4955.9682250000005 ZT12-15 1254.4898755 690.0599835 1818.9197675 ZT16-19 431.21175625 390.8218924 471.6016201 ZT20-23 215.55783510999998 120.00746727 311.10820294999996