. 2019 Apr 28;16(9):1504. doi: 10.3390/ijerph16091504

Table 1.

Variables used in this paper and their descriptions.

Variable	Description
$S T_{m e a n}$	daily mean surface soil temperature
$S T_{\max}$	daily maximum surface soil temperature
$S T_{\min}$	daily minimum surface soil temperature
SDTR	$S T_{\max}$ – $S T_{\min}$ , diurnal range of surface soil temperature
$A T_{mean}$	daily mean air surface temperature
$A T_{\max}$	daily maximum air surface temperature
$A T_{\min}$	daily minimum air surface temperature
DTR	$A T_{\max}$ – $A T_{\min}$ , diurnal range of air temperature
SD	daily sunshine duration
h	daily mean relative humidity
V	daily mean surface wind speed
p	daily accumulation of precipitation
$T_{D}$	$S T_{m e a n} - A T_{m e a n}$