condition mean min max ZT0-3 384.26300000000003 380.0695 388.4565 ZT4-7 507.559 507.559 507.559 ZT8-11 414.73299999999995 414.73299999999995 414.73299999999995 ZT12-15 0 0 0 ZT16-19 202.40800000000002 202.40800000000002 202.40800000000002 ZT20-23 306.74850000000004 306.74850000000004 306.74850000000004