condition mean min max ZT0-3 141.72211 141.72211 141.72211 ZT4-7 147.2837835 147.2837835 147.2837835 ZT8-11 123.531397 123.531397 123.531397 ZT12-15 132.091694 132.091694 132.091694 ZT16-19 128.165072 128.165072 128.165072 ZT20-23 155.2191015 155.2191015 155.2191015