Условие:
Table 25\nHygienic concentrations of fluorides in drinking water\nClimatic\nregion\nClimate\nFluoride content in drinking water,\nmg/L\nInsufficient Optimal MPC\nI\nII\nCold < 1 mg/L 1.0 1.5\nTemperate\nIII\nWarm\nIV\nHot
< 0.5-0.6 mg/L
0.9
0.7
97
1.2

