Evaluation results of sanitary and hygiene conditions in a 4-bed ward were as follows: ward area - 30 m2, height - 3,2 m, temperature - 20°C, humidity - 55%, air velocity - 0,1 m/s, window-to-floor area ratio -1:5, daylight ratio - 0,6%, concentration of carbon dioxide in the air - 0,1%. Which of the given indicators does not meet hygienic requirements?