Table 3: Comparison of zero-points of our DENIS magnitudes, with those of other samples ("Mathewson'' and "2MASS'').
X-axis Y-axis $\langle X-Y \rangle$ $\sigma$ n
Math. I DENIS $I_{\rm d}$ 0.018 0.144 599
Math. I DENIS $I_{\rm t}$ 0.085 0.142 605
Math. I DENIS $I_{\rm k}$ 0.023 0.143 606
Math. I DENIS $I_{\rm s}$ 0.143 0.185 542
2MASS J DENIS $J_{\rm d}$ 0.031 0.242 $48 \ 442$
2MASS J DENIS $J_{\rm t}$ 0.089 0.218 $49 \ 140$
2MASS J DENIS $J_{\rm k}$ 0.023 0.210 $48 \ 439$
2MASS J DENIS $J_{\rm s}$ -0.210 0.214 $38 \ 199$
2MASS K DENIS $K_{\rm d}$ 0.039 0.402 $23 \ 538$
2MASS K DENIS $K_{\rm t}$ 0.091 0.379 $21 \ 499$
2MASS K DENIS $K_{\rm k}$ -0.069 0.350 $21 \ 943$
2MASS K DENIS $K_{\rm s}$ -0.096 0.362 $10 \ 300$
2MASS J DENIS $J_{\rm d}$ 0.031 0.242 $48 \ 442$
2MASS J DENIS $J_{\rm t}$ 0.089 0.218 $49 \ 140$
2MASS J DENIS $J_{\rm k}$ 0.023 0.210 $48 \ 439$
2MASS J DENIS $J_{\rm s}$ -0.210 0.214 $38 \ 199$


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