Figure 3
The horizontal axis shows dates from January 1, 2018 to December 1, 2018, with monthly tick marks labeled January 1, 2018, February 1, 2018, March 1, 2018, April 1, 2018, May 1, 2018, June 1, 2018, July 1, 2018, August 1, 2018, September 1, 2018, October 1, 2018, November 1, 2018, and December 1, 2018. The vertical axis is labeled “Natural gas use (cubic meters per day)” and ranges from negative 100 to 800 in increments of 100 cubic meters per day. The legend lists two series: “D H W heating” and “Space heating”. D H W heating stays low and nearly stable throughout the year, typically around 10 to 40 cubic meters per day with small fluctuations. Space heating shows much larger variation, starting around 0 to 80 cubic meters per day in January to March, increasing steadily through spring and early summer, then peaking between July and September with frequent values around 250 to 500 cubic meters per day and a maximum spike near 750 cubic meters per day around late August. After September, space heating decreases gradually, returning to mostly 50 to 200 cubic meters per day by November and December. Note: All numerical values are approximated.Daily gas consumption, space and water heating. Source: Authors' own work