condition mean min max ZT0-3 243.27525 233.1825 253.368 ZT4-7 206.022 206.022 206.022 ZT8-11 401.11199999999997 401.11199999999997 401.11199999999997 ZT12-15 0 0 0 ZT16-19 380.274 380.274 380.274 ZT20-23 290.44599999999997 290.44599999999997 290.44599999999997