condition mean min max ZT0-3 124.02989217499999 107.2073888 140.85239554999998 ZT4-7 84.32702972249999 83.67541578999999 84.978643655 ZT8-11 78.4260652275 72.39660616 84.455524295 ZT12-15 49.965656370000005 34.37554735 65.55576539 ZT16-19 43.84952696250001 40.8459008 46.853153125000006 ZT20-23 55.339651159999995 50.52995213 60.14935018999999