condition mean min max ZT0-3 411.7255 298.428 579.8415 ZT4-7 421.6355 421.6355 421.6355 ZT8-11 290.0075 290.0075 290.0075 ZT12-15 141.554 119.025 164.083 ZT16-19 84.0216 84.0216 84.0216 ZT20-23 123.7995 123.7995 123.7995