condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.08059275 0.08059275 0.08059275 ZT8-11 0.074513 0.074513 0.074513 ZT12-15 0.0 0.0 0.0 ZT16-19 0.06938240000000001 0.06938240000000001 0.06938240000000001 ZT20-23 0.132643 0.132643 0.132643