condition mean min max ZT0-3 1376.7688922500001 1267.957018 1485.5807665 ZT4-7 923.028701325 617.29658215 1228.7608205000001 ZT8-11 207.98370053 106.28646218499999 309.680938875 ZT12-15 189.76532874749998 104.30893689999999 275.22172059499997 ZT16-19 490.440057975 477.87898340000004 503.00113254999997 ZT20-23 459.5761193 423.86527785 495.28696075000005