condition mean min max ZT0-3 130.99575 122.65 139.3415 ZT4-7 135.601 135.601 135.601 ZT8-11 181.352 181.352 181.352 ZT12-15 0 0 0 ZT16-19 170.8595 170.8595 170.8595 ZT20-23 144.84550000000002 144.84550000000002 144.84550000000002