condition mean min max ZT0-3 0.3817025 0.0 0.763405 ZT4-7 0.751335 0.751335 0.751335 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0