condition mean min max ZT0-3 0.05601178225 0.044712681 0.0673108835 ZT4-7 0.0049564645000000004 0.0 0.009912929000000001 ZT8-11 0.01711026175 0.0 0.0342205235 ZT12-15 0.024152277 0.0161281135 0.0321764405 ZT16-19 0.03594167375 0.035429419999999996 0.0364539275 ZT20-23 0.04047044725 0.032308969 0.048631925500000006