condition mean min max ZT0-3 1237.35 1237.35 1237.35 ZT4-7 1192.2 1192.2 1192.2 ZT8-11 1152.3000000000002 1152.3000000000002 1152.3000000000002 ZT12-15 1115.1 1115.1 1115.1 ZT16-19 1287.5 1287.5 1287.5 ZT20-23 1240.3000000000002 1240.3000000000002 1240.3000000000002