condition mean min max ZT0-3 361.631582 361.631582 361.631582 ZT4-7 388.91389649999996 388.91389649999996 388.91389649999996 ZT8-11 389.648876 389.648876 389.648876 ZT12-15 380.76480849999996 380.76480849999996 380.76480849999996 ZT16-19 291.976856 291.976856 291.976856 ZT20-23 382.5270005 382.5270005 382.5270005