condition mean min max ZT0-3 0.093625 0.062547 0.124703 ZT4-7 0.063617 0.063617 0.063617 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0613195 0.0613195 0.0613195 ZT20-23 0.617503 0.617503 0.617503