condition mean min max ZT0-3 27.2499266475 25.312579225 29.18727407 ZT4-7 44.198346285 30.066828085 58.329864485 ZT8-11 98.55653332 78.28159429 118.83147234999998 ZT12-15 92.52811843500001 73.98550215499999 111.07073471500001 ZT16-19 69.8070455975 60.27801279 79.336078405 ZT20-23 105.6439307925 90.465788785 120.8220728