Housing conditions and energy efficiency Households according to whether they have an adequate temperature in the housing in cold months or in summer, by income quintile per unit of consumption. Unidades: Percentages. ;Not warm enough during the cold months;Not cool enough during the summer; Total;27,5;33,6; First quintile;38,9;41,3; Second quintile;34,2;37,8; Third quintile;28,1;33,8; Fourth quintile;21,8;30,9; Fifth quintile;15;24,8; Notas: Income per unit of consumption is obtained, for each household, by dividing total household income by the number of units of consumption. The distribution of persons is taken. Fuente: Instituto Nacional de Estadística