condition mean min max ZT0-3 1806.35 1806.35 1806.35 ZT4-7 2697.9 2697.9 2697.9 ZT8-11 2235.45 2235.45 2235.45 ZT12-15 1811.15 1811.15 1811.15 ZT16-19 1583.8000000000002 1583.8000000000002 1583.8000000000002 ZT20-23 1403.0 1403.0 1403.0