Let us denote A (1) = a1, A (2) = a2, A (3) = a3 Overall thermal sensitivity of LIR ratio (E2/E1, E2/E3, and E2/E4) over the temperature range of 300–440 K = \(\sum_{k=1}^{3}\left[\sum_{i=1}^{{i}_{k}}{A}_{i}^{(k)} {A}_{ij}^{(k)}\right]\); for j = 1, 2, 3; i1 = 3 (in our case) | |
= 0.1009 (E2/E1) | |
0.3960 (E2/E3) | |
0.5029 (E2/E4) |