condition mean min max ZT0-3 343.16850000000005 225.47050000000002 504.24850000000004 ZT4-7 436.267 436.267 436.267 ZT8-11 290.097 290.097 290.097 ZT12-15 423.77374999999995 408.8975 438.65 ZT16-19 354.08349999999996 354.08349999999996 354.08349999999996 ZT20-23 378.9565 378.9565 378.9565