condition mean min max ZT0-3 0.23920599999999997 0.11848049999999999 0.47792049999999997 ZT4-7 0.0579745 0.0579745 0.0579745 ZT8-11 0.1763275 0.1763275 0.1763275 ZT12-15 1.2206674999999998 1.1514 1.2899349999999998 ZT16-19 1.7332049999999999 1.7332049999999999 1.7332049999999999 ZT20-23 0.4951105 0.4951105 0.4951105