condition mean min max ZT0-3 0.906929109 0.852734708 0.96112351 ZT4-7 1.5831797277500002 0.893598946 2.2727605095000003 ZT8-11 2.2073962862500003 1.6734478805000002 2.741344692 ZT12-15 1.98249180475 1.9372091195 2.02777449 ZT16-19 2.8189355834999996 2.0355533484999997 3.6023178184999995 ZT20-23 6.8268206475 5.100615937000001 8.553025358