condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0538138 0.0538138 0.0538138 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.04733745 0.04733745 0.04733745 ZT20-23 0.0310415 0.0310415 0.0310415