condition mean min max ZT0-3 293.47811460525 1.528100597 585.4281286135 ZT4-7 6005.95952725 3533.098407 8478.8206475 ZT8-11 10698.844486 10261.197077 11136.491895 ZT12-15 2576.153642295 97.986724275 5054.320560315 ZT16-19 49.027574879999996 47.756209424999994 50.298940335 ZT20-23 25.418759356 13.956715607 36.880803105