condition mean min max ZT0-3 129.441315 129.441315 129.441315 ZT4-7 103.8236935 103.8236935 103.8236935 ZT8-11 101.01675800000001 101.01675800000001 101.01675800000001 ZT12-15 124.30218350000001 124.30218350000001 124.30218350000001 ZT16-19 206.223758 206.223758 206.223758 ZT20-23 242.6366915 242.6366915 242.6366915