condition mean min max ZT0-3 618.355822 618.355822 618.355822 ZT4-7 711.7908405000001 711.7908405000001 711.7908405000001 ZT8-11 744.6690165 744.6690165 744.6690165 ZT12-15 697.8427175 697.8427175 697.8427175 ZT16-19 753.617609 753.617609 753.617609 ZT20-23 781.7592185000001 781.7592185000001 781.7592185000001