condition mean min max ZT0-3 33.861848120000005 32.64245279 35.08124345 ZT4-7 33.15473815 30.00774964 36.30172666 ZT8-11 48.89091818833333 45.784819936666665 51.997016439999996 ZT12-15 67.09562740999999 59.38443144 74.80682338 ZT16-19 68.88736357833334 64.36550561666667 73.40922154 ZT20-23 57.04361120833333 52.72195345 61.36526896666667