city pacific northwest recorded its highest temperature 74 deg f and its lowest 23 deg

A city in the Pacific Northwest recorded its highest temperature at 74 deg F and its lowest at 23 deg F for a particular year. Use this information to establish 10 classes. Is the following correct? [23.0,28.1) [28.1,33.2) [33.2,38.3) [38.3,43.4) [43.4,48.5) [48.5,53.6) [53.6,58.7) [58.7,63.8) [63.8,68.9) [68.9,74.0)