condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1127127 0.1127127 0.1127127 ZT12-15 0.0756365 0.0756365 0.0756365 ZT16-19 0.01865515 0.01865515 0.01865515 ZT20-23 0.065717 0.065717 0.065717