condition mean min max ZT0-3 155.30895 155.30895 155.30895 ZT4-7 196.584996 196.584996 196.584996 ZT8-11 225.790588 225.790588 225.790588 ZT12-15 316.18850399999997 316.18850399999997 316.18850399999997 ZT16-19 241.0104925 241.0104925 241.0104925 ZT20-23 189.29516999999998 189.29516999999998 189.29516999999998