condition mean min max ZT0-3 96.21709999999999 50.11065 132.2985 ZT4-7 52.449 52.449 52.449 ZT8-11 45.75749999999999 45.75749999999999 45.75749999999999 ZT12-15 62.530575000000006 59.321600000000004 65.73955000000001 ZT16-19 80.19890000000001 80.19890000000001 80.19890000000001 ZT20-23 143.74450000000002 143.74450000000002 143.74450000000002