condition mean min max ZT0-3 9.83234 9.6417 10.02298 ZT4-7 10.9488 10.9488 10.9488 ZT8-11 12.37355 12.37355 12.37355 ZT12-15 0 0 0 ZT16-19 11.780149999999999 11.780149999999999 11.780149999999999 ZT20-23 11.3232 11.3232 11.3232