Table. 1:

Selected studies and temperature variability within them. The study area is the geographic area from where health outcomes were reported (* denotes studies that used health outcomes from particular hospital(s); calculation of the study area in these cases is described in the text). The calculation of the difference between the mean temperature of the study area and the pollen monitoring station used absolute values. Temperature is February night land surface temperature from Modis (Terra satellite).

Study	Temperature of study area (mean and range, ° C)	Temperature of pollen monitoring station (° C)	Difference between study area and station (° C)	Area within 1° C of station (%)
Darrow et al. 2012	3.6 (1.5 – 7.2)	4.5	−0.9	57
Gleason et al. 2014	−3.3 (−9.3 – 4.6)	−3.4	0.2	29
Guilbert et al. 2016	−0.6 (−2.1 – 0.5)	−0.2	−0.3	87
Ito et al. 2015	−1.9 (−3.8 – 2.9)	−4.5	2.7	0
Jariwala et al. 2014*	−2.3 (−3.3 – −0.8)	−4.5	2.3	0
Konishi et al. 2014*	3.8 (2.4 – 5.5)	1.6	2.2	1
Osborne et al. 2017	0.7 (−1.9 – 3.1)	1.3	−0.6	71
Qin et al. 2013	−4.2 (−6.0 – 0.7)	−2.5	−1.7	10
Sakata et al. 2017*	3.7 (2.5 – 6.0)	3.3	0.4	84
Sun et al. 2016	2.9 (1.2 – 5.9)	3.0	−0.1	90
Wang et al. 2017*	−1.5 (−3.3 – −0.6)	−0.9	−0.5	78
mean	0.4	−0.2	1.1	46