condition mean min max ZT0-3 39.1592597275 34.612252365 43.70626709 ZT4-7 40.5883088725 34.96528587 46.211331875 ZT8-11 85.7558081025 64.912018305 106.59959789999999 ZT12-15 56.80524105 36.500486859999995 77.10999524 ZT16-19 30.976559260000002 29.095489980000004 32.85762854 ZT20-23 26.251823209999998 25.640780579999998 26.862865839999998