condition mean min max ZT0-3 0.9958239999999999 0.9958239999999999 0.9958239999999999 ZT4-7 0.5522769999999999 0.5522769999999999 0.5522769999999999 ZT8-11 0.228396 0.228396 0.228396 ZT12-15 0.7606904999999999 0.7606904999999999 0.7606904999999999 ZT16-19 0.9672955000000001 0.9672955000000001 0.9672955000000001 ZT20-23 1.3005849999999999 1.3005849999999999 1.3005849999999999