condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0781094 0.0781094 0.0781094 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0214858 0.0214858 0.0214858 ZT20-23 0.01065605 0.01065605 0.01065605