Assessment of heat stress in 7-week old dairy calves with non-invasive physiological parameters in different thermal environments - Fig 4

<p><b>Changes in relative humidity (a), ambient temperature (b) and THI (c) in the shaded and unshaded hutch environment during the 5-day study period.</b> Data are presented with a 30-min recording interval. The grey area between the first and the second dashed vertical lines represents day 2 (heat stress day).