condition mean min max ZT0-3 32.6863197725 32.672117255 32.70052229 ZT4-7 38.078325295 34.127575375 42.029075215000006 ZT8-11 54.115543672499996 44.86833267 63.362754675 ZT12-15 70.8856651625 65.834312875 75.93701745 ZT16-19 70.5099152425 67.78518213 73.234648355 ZT20-23 77.4032991275 70.80566565000001 84.000932605