is subdivided into units, each with a high school, shopping centres, dispensaries and play areas. While most of the units house government employees, Unit V houses the administrative buildings, including the State Secretariat, State Assembly and the Raj Bhavan. Private residential areas were later built in other areas of the planned city, including Saheed Nagar and Satya Nagar. Unit I, popularly known as the Market Building, was formed to cater to the shopping needs of the new capital's residents. Later, markets and commercial establishments developed along the Janpath and Cuttack-Puri Road at Saheed Nagar, Satya Nagar, Bapuji Nagar and Ashok Nagar. A dedicated institutional area houses educational and research institutes, including Utkal University, the Institute of Physics, the Institute of Minerals and Materials Technology and Sainik School. Indira Gandhi Park, Gandhi Park and the Biju Patnaik Park are located in the unit. The added areas are mostly areas lying north of National Highway 5, including Nayapalli, Jayadev Vihar, Chandrasekharpur and Sailashree Vihar, Niladri vihar which were developed by Bhubaneswar Development Authority to house the growing population. With the development of the new areas such as Chandrasekharpur the city is now divided roughly into North(newer areas) and South Bhubaneswar (older areas) by the NH-5 highway. The peripheral areas are outside the municipal boundary or have subsequently been included within the extended boundary, including Tomando, Patia and Raghunathpur. Most of these areas were developed in a haphazard manner, without proper planning. The Master Planning Branch of the Bhubaneswar Development Authority developed the Comprehensive Development Plan (CDP) in 2010. According to the Odisha Development Authorities Act, 1982, the Development Authority has control over the planning for municipal areas. Apart from the CDP, BDA has also created Zonal Development Plans for some of the areas under the CDP. Bhubaneswar secured the top rank in the Smart city list in India. Climate Bhubaneswar has a tropical savanna climate, designated Aw under the Köppen climate classification. Temperatures in Bhubaneswar ususally range from . It experiences four primary seasons: winter (December to February), when temperatures can drop to ; summer (March to May), when temperatures can reach or higher; monsoon (June to October); and post-monsoon (November). The annual mean temperature is ; monthly mean temperatures are . Summers (March to June) are hot and humid, with temperatures in the low 30s C; during dry spells, maximum temperatures often exceed in May and June. Winter lasts for only