condition mean min max ZT0-3 11.129445 10.295390000000001 11.9635 ZT4-7 13.18705 13.18705 13.18705 ZT8-11 14.593900000000001 14.593900000000001 14.593900000000001 ZT12-15 0 0 0 ZT16-19 13.64645 13.64645 13.64645 ZT20-23 10.34023 10.34023 10.34023