For a person for whom for health reasons it is hard to leave in location where temperature is below +15 or above +25 we are searching for optimal travel route during the year across 9 cities from the table below. Provide up to 3 travel during the year routes, minimize number of routes and routes across regions Return results in JSON format.
Sample JSON
{
"route1": [
{region: "Asia", city"city1",month_from:"month1_name, month_to:"month2_name", temperature_range_during_stay":"23-25" },
]