condition mean min max ZT0-3 178.88911997000002 75.60914414 282.16909580000004 ZT4-7 334.710019975 323.54580610000005 345.87423385 ZT8-11 113.14302760675 57.26519013349999 169.02086508 ZT12-15 2.29382239625 0.88819096 3.6994538324999997 ZT16-19 10.460583938 5.130732038 15.790435838 ZT20-23 21.43708085 20.143741515000002 22.730420185