condition mean min max ZT0-3 208.989084 208.989084 208.989084 ZT4-7 293.602214 293.602214 293.602214 ZT8-11 385.495506 385.495506 385.495506 ZT12-15 385.51178849999997 385.51178849999997 385.51178849999997 ZT16-19 575.550166 575.550166 575.550166 ZT20-23 392.88440649999995 392.88440649999995 392.88440649999995