condition mean min max ZT0-3 56.483808 56.483808 56.483808 ZT4-7 59.789762999999994 59.789762999999994 59.789762999999994 ZT8-11 77.32691650000001 77.32691650000001 77.32691650000001 ZT12-15 126.71499499999999 126.71499499999999 126.71499499999999 ZT16-19 141.2540105 141.2540105 141.2540105 ZT20-23 139.22635250000002 139.22635250000002 139.22635250000002