condition mean min max ZT0-3 32.42395 32.42395 32.42395 ZT4-7 219.86849999999998 219.86849999999998 219.86849999999998 ZT8-11 14.671199999999999 14.671199999999999 14.671199999999999 ZT12-15 0.8397025 0.8397025 0.8397025 ZT16-19 2.119345 2.119345 2.119345 ZT20-23 2.384185 2.384185 2.384185