Figure 6
The panels are labeled a through d. In all panels, points show monthly values, and each plot includes an R-squared label. Panel a is titled “Gas (space heating) versus monthly mean temperature”. The horizontal axis is labeled “Monthly mean temperature (degrees Celsius)” and ranges from 0 to 25 in increments of 5 degrees Celsius. The vertical axis is labeled “Gas (space heating) (kilowatt-hours per day)” and ranges from 0 to 4500 in increments of 500 kilowatt-hours per day. Points show a strong decreasing trend, with gas use near 4000 at about 10 degrees Celsius and dropping to about 600 to 1000 at about 20 to 21 degrees Celsius; R-squared equals 0.9576. Panel b is titled “Gas (space heating) versus monthly min temperature”. The horizontal axis is labeled “Monthly min temperature (degrees Celsius)” and ranges from 0 to 20 in increments of 5 degrees Celsius. The vertical axis is labeled “Gas (space heating) (kilowatt-hours per day)” and ranges from 0 to 4500 in increments of 500 kilowatt-hours per day. Gas use decreases from about 4000 at about 6 degrees Celsius to about 600 at about 15 degrees Celsius; R-squared equals 0.9146. Panel c is titled “H V A C (electricity) versus monthly mean temperature”. The horizontal axis is labeled “Monthly mean temperature (degrees Celsius)” and ranges from 0 to 30 in increments of 10 degrees Celsius. The vertical axis is labeled “H V A C electricity (kilowatt-hours per day)” and ranges from 0 to 2000 in increments of 200 kilowatt-hours per day. Points show an increasing trend from about 1100 at 10 to 12 degrees Celsius to about 1750 at about 21 degrees Celsius; R-squared equals 0.7462. Panel d is titled “H V A C (electricity) versus monthly max temperature”. The horizontal axis is labeled “Monthly max temperature (degrees Celsius)” and ranges from 0 to 30 in increments of 10 degrees Celsius. The vertical axis is labeled “H V A C (electricity) (kilowatt-hours per day)” and ranges from 0 to 2000 in increments of 200 kilowatt-hours per day. Points show a moderate increasing trend from about 1100 near 15 degrees Celsius to about 1800 near 26 to 28 degrees Celsius; R-squared equals 0.7057. Each graph contains a dashed regression line that passes through the scattered points. Note: All numerical values are approximated.Correlation between various temperature indicators and heating energy use. Source: Authors' own work