condition mean min max ZT0-3 3037.0 3037.0 3037.0 ZT4-7 2721.9 2721.9 2721.9 ZT8-11 2812.85 2812.85 2812.85 ZT12-15 2980.7 2980.7 2980.7 ZT16-19 2954.65 2954.65 2954.65 ZT20-23 2926.0 2926.0 2926.0