condition mean min max ZT0-3 87.67275000000001 87.67275000000001 87.67275000000001 ZT4-7 80.89760000000001 80.89760000000001 80.89760000000001 ZT8-11 70.79400000000001 70.79400000000001 70.79400000000001 ZT12-15 80.01689999999999 80.01689999999999 80.01689999999999 ZT16-19 81.1266 81.1266 81.1266 ZT20-23 94.30855 94.30855 94.30855