ChMs of 47 Tucanae for the cluster center and the three external fields, A, B, and C. The ChM of the central region is based on RGB stars, whereas the ChMs of fields A, B, and C are derived for M dwarfs in the lower part of the MS. In all ChMs, 1G and 2G stars are marked with red and gray points, respectively, whereas photometric uncertainties are represented by the error bars in the bottom left corner. The top panels illustrate the kernel-density distributions of 1G stars and observational errors.