condition mean min max ZT0-3 93.400317 93.400317 93.400317 ZT4-7 100.92716949999999 100.92716949999999 100.92716949999999 ZT8-11 142.02233 142.02233 142.02233 ZT12-15 135.931523 135.931523 135.931523 ZT16-19 130.920582 130.920582 130.920582 ZT20-23 120.36307450000001 120.36307450000001 120.36307450000001