condition mean min max ZT0-3 0.13365355725 0.08925821199999999 0.1780489025 ZT4-7 0.479737427 0.0569939525 0.9024809014999999 ZT8-11 15.72727919175 8.4615915315 22.992966852000002 ZT12-15 39.276887915 32.434562235 46.119213595 ZT16-19 43.987521565 42.280415995 45.694627135000005 ZT20-23 31.315596945000003 26.13743404 36.493759850000004