condition mean min max ZT0-3 0.029604725 0.02925885 0.0299506 ZT4-7 0.060047100000000006 0.060047100000000006 0.060047100000000006 ZT8-11 0.059263 0.059263 0.059263 ZT12-15 0 0 0 ZT16-19 0.02953155 0.02953155 0.02953155 ZT20-23 0.1187361 0.1187361 0.1187361