condition mean min max ZT0-3 25.348174999999998 24.5558 26.140549999999998 ZT4-7 34.5977 34.5977 34.5977 ZT8-11 38.57445 38.57445 38.57445 ZT12-15 0 0 0 ZT16-19 34.741600000000005 34.741600000000005 34.741600000000005 ZT20-23 32.6428 32.6428 32.6428