condition mean min max ZT0-3 2295.25 2173.065 2417.4350000000004 ZT4-7 2135.4049999999997 2135.4049999999997 2135.4049999999997 ZT8-11 1359.54 1359.54 1359.54 ZT12-15 0 0 0 ZT16-19 1258.75 1258.75 1258.75 ZT20-23 1833.13 1833.13 1833.13