condition mean min max ZT0-3 44.369479 44.369479 44.369479 ZT4-7 37.8568465 37.8568465 37.8568465 ZT8-11 34.2320215 34.2320215 34.2320215 ZT12-15 58.48019000000001 58.48019000000001 58.48019000000001 ZT16-19 50.263221 50.263221 50.263221 ZT20-23 101.88032050000001 101.88032050000001 101.88032050000001