condition mean min max ZT0-3 541.55 541.55 541.55 ZT4-7 393.0 393.0 393.0 ZT8-11 333.95 333.95 333.95 ZT12-15 371.4 371.4 371.4 ZT16-19 494.65 494.65 494.65 ZT20-23 520.6500000000001 520.6500000000001 520.6500000000001