Changes in temperature, rainfall and humidity from January to December, 2009. The X-axis shows the monthly average climatic variation, while the Y-axis shows climatic factor ranges such as temperature, humidity and rainfall. Humidity and temperature remained the same throughout the year but rainfall varied. Normally in Phitsanulok the rainy season starts from April and ends in October.
Sarfraz et al. BMC Public Health 2012 12:853 doi:10.1186/1471-2458-12-853