condition mean min max ZT0-3 52.778125 43.386700000000005 62.16955 ZT4-7 39.98605 39.98605 39.98605 ZT8-11 44.002700000000004 44.002700000000004 44.002700000000004 ZT12-15 0 0 0 ZT16-19 64.78765 64.78765 64.78765 ZT20-23 86.72370000000001 86.72370000000001 86.72370000000001