Table 4 OS services energy consumption rates

OS service S _j

Energy rate$\left(\mathbf{\sum }_{\mathbf{1}\mathbf{\le }\mathbf{i}\mathbf{\le }\mathbf{7}}\mathbf{\sum }_{\mathbf{1}\mathbf{\le }\mathbf{j}\mathbf{\le }\mathbf{3}}{\mathbf{\delta }}_{\mathbf{i}\mathbf{,}\mathbf{j}}\right)$