condition mean min max ZT0-3 0.22332675 0.0 0.4466535 ZT4-7 0.9065605 0.9065605 0.9065605 ZT8-11 1.0130305000000002 1.0130305000000002 1.0130305000000002 ZT12-15 0 0 0 ZT16-19 1.778585 1.778585 1.778585 ZT20-23 0.560428 0.560428 0.560428