\begin{table}%t1 \caption{\label{tab_CC}The estimated $(J-H)_{\rm in}$ and $(H-K_{\rm s})_{\rm in}$ intrinsic colours for main sequence stars.} \par %\centerline { \begin{tabular}{llccrrr} \hline\hline Sp.&$M_{K}$&$(J-H)_{\rm in}$&$(H-K_{\rm s})_{\rm in}$&$\sigma_{(JH)_{\rm o}}$&$\sigma_{(HK)_{\rm o}}$&$N^{\star}$\\ \hline A0V& 0.65& -0.026& 0.029&0.030&0.028&50 \\ A1V& 1.00& -0.014& 0.036&0.037&0.032&45 \\ A2V& 1.17& -0.004& 0.043&0.044&0.035&43 \\ A3V& 1.35& 0.020& 0.048&0.049&0.032&58 \\ A4V& 1.49& 0.042& 0.050&0.044&0.026&23 \\ A5V& 1.60& 0.050& 0.052&0.040&0.029&24 \\ A6V& 1.62& 0.058& 0.051&0.037&0.024&12 \\ A7V& 1.63& 0.075& 0.054&0.039&0.031&23 \\ A8V& 1.64& 0.084& 0.055&0.047&0.032&8 \\ A9V& 1.72& 0.090& 0.059&0.033&0.026&37 \\ F0V& 1.86& 0.119& 0.062&0.042&0.026&105\\ F1V& 2.00& 0.142& 0.062&0.040&0.026&9 \\ F2V& 2.15& 0.162& 0.064&0.035&0.025&141\\ F3V& 2.26& 0.170& 0.065&0.032&0.029&269\\ F4V& 2.38& 0.175& 0.064&0.037&0.028&28 \\ F5V& 2.49& 0.195& 0.068&0.036&0.027&492\\ F6V& 2.62& 0.211& 0.072&0.036&0.027&390\\ F7V& 2.75& 0.228& 0.069&0.034&0.032&387\\ F8V& 2.88& 0.235& 0.069&0.038&0.029&308\\ F9V& 3.04& 0.252& 0.080&0.030&0.028&30 \\ G0V& 3.19& 0.257& 0.076&0.033&0.028&396\\ G1V& 3.24& 0.265& 0.078&0.035&0.028&242\\ G2V& 3.29& 0.276& 0.079&0.036&0.026&320\\ G3V& 3.34& 0.285& 0.083&0.036&0.029&477\\ G4V& 3.45& 0.302& 0.084&0.032&0.031&8 \\ G5V& 3.56& 0.303& 0.085&0.035&0.030&499\\ G6V& 3.68& 0.325& 0.090&0.040&0.028&188\\ G8V& 3.90& 0.347& 0.093&0.048&0.030&259\\ G9V& 4.03& 0.363& 0.094&0.074&0.021&9 \\ K0V& 4.15& 0.388& 0.098&0.048&0.031&207\\ K1V& 4.13& 0.406& 0.094&0.046&0.032&93 \\ K2V& 4.15& 0.453& 0.115&0.053&0.028&140\\ K3V& 4.15& 0.473& 0.120&0.046&0.039&137\\ K4V& 4.22& 0.529& 0.130&0.057&0.037&43 \\ K5V& 4.35& 0.555& 0.142&0.051&0.031&108\\ K7V& 4.83& 0.604& 0.160&0.031&0.035&54 \\ \hline \end{tabular}} \par \medskip $N^{\star}$ the number of stars used to estimate the colours. \end{table}