condition mean min max ZT0-3 1030.55275 893.6055 1167.5 ZT4-7 94.57195 94.57195 94.57195 ZT8-11 79.63040000000001 79.63040000000001 79.63040000000001 ZT12-15 0 0 0 ZT16-19 28.883 28.883 28.883 ZT20-23 14.666450000000001 14.666450000000001 14.666450000000001