condition mean min max ZT0-3 391.6028333333333 329.5355 427.8925 ZT4-7 305.5525 305.5525 305.5525 ZT8-11 248.73000000000002 248.73000000000002 248.73000000000002 ZT12-15 366.312 312.85749999999996 419.7665 ZT16-19 380.9735 380.9735 380.9735 ZT20-23 424.24800000000005 424.24800000000005 424.24800000000005