condition mean min max ZT0-3 26.12975 25.65735 26.60215 ZT4-7 16.563200000000002 16.563200000000002 16.563200000000002 ZT8-11 18.38895 18.38895 18.38895 ZT12-15 0 0 0 ZT16-19 24.4832 24.4832 24.4832 ZT20-23 18.451 18.451 18.451