condition mean min max ZT0-3 11.28425 10.654399999999999 11.914100000000001 ZT4-7 9.821275 9.821275 9.821275 ZT8-11 10.983699999999999 10.983699999999999 10.983699999999999 ZT12-15 0 0 0 ZT16-19 12.1512 12.1512 12.1512 ZT20-23 11.935500000000001 11.935500000000001 11.935500000000001