condition mean min max ZT0-3 0.0632295 0.0624345 0.0640245 ZT4-7 0.063012 0.063012 0.063012 ZT8-11 0.6414315 0.6414315 0.6414315 ZT12-15 0 0 0 ZT16-19 0.3776005 0.3776005 0.3776005 ZT20-23 0.1269485 0.1269485 0.1269485