condition mean min max ZT0-3 390.5315 380.8705 400.1925 ZT4-7 370.38 370.38 370.38 ZT8-11 422.17650000000003 422.17650000000003 422.17650000000003 ZT12-15 0 0 0 ZT16-19 443.85450000000003 443.85450000000003 443.85450000000003 ZT20-23 400.696 400.696 400.696