condition mean min max ZT0-3 5360.482552 5360.482552 5360.482552 ZT4-7 4737.5322479999995 4737.5322479999995 4737.5322479999995 ZT8-11 3745.943862 3745.943862 3745.943862 ZT12-15 5027.517975500001 5027.517975500001 5027.517975500001 ZT16-19 5036.994544499999 5036.994544499999 5036.994544499999 ZT20-23 4148.7572065 4148.7572065 4148.7572065