condition mean min max ZT0-3 526.8 526.8 526.8 ZT4-7 507.4 507.4 507.4 ZT8-11 553.5 553.5 553.5 ZT12-15 514.85 514.85 514.85 ZT16-19 498.7 498.7 498.7 ZT20-23 497.29999999999995 497.29999999999995 497.29999999999995