Time

equation

r

Spring

00:00-23:50

y = 0.656x + 8.141

0.8516**

Summer

00:00-06:40

y = 0.823x + 4.398

0.8971**

06:40-21:50

y = 0.758x + 5.578

0.8943**

21:50-23:50

y = 0.720x + 6.722

0.8357**

Autumn

00:00-08:40

y = 0.820x + 3.482

0.9558**

08:40-17:40

y = 0.833x + 1.833

0.9646**

17:40-23:50

y = 0.833x + 3.165

0.9645**

Winter

00:00-23:50

y = 0.790x + 6.183

0.7809**