condition mean min max ZT0-3 0.15241552800000002 0.089726805 0.21510425100000002 ZT4-7 0.23787392224999998 0.0457834305 0.42996441399999996 ZT8-11 0.495392799 0.424394433 0.566391165 ZT12-15 1.6180829862500001 1.2154142555 2.020751717 ZT16-19 3.00582608525 2.298710202 3.7129419685 ZT20-23 3.7063358407499996 3.4791204385 3.9335512429999997