Table 2.

School playground outdoor environment predictors (sum) and relative MVPA (mean): A. yearly predictors and B. seasonal predictors

		Art grass 1	Forest 2	City 3	Hill 4
A. yearly data	School outdoor area (m2)	24890	23482	13273	26613
	Outer limit of surface used for play (m2) 2nd grade	13915	9068	6562	12942
	Outer limit of surface used for play (m2) 5th grade	16592	12358	10111	12942
	Ball play area (m2)	5850	2800	2290	3075
	Green area (m2)	1720	7500	2200	2700
	Fixed equipment (sum)	13	14	16	17
	Outdoor pedagogical approach	No	Yes	No	No
	Percent in MVPA of the outdoor time (mean)	54.8	52.0	42.4	42.7
B. seasonal data	Temperature (°C)	15,9/-3,2/15,3	14/-4,3/15,3	13,1/3,3/14,8	13,1/3,3/14,8
Sept/March/May	Weather conditions (index median)*	2/3/4	3/2/2	3/2/2	3/2/2
	Used play area (% of playground) 2nd grade	79/72/59	95/41/95	76/82/78	41/41/52
	Used play area (% of playground) 5th grade	36/51/42	97/60/93	59/64/40	17/26/23
	Outdoor stay time (min) 2nd grade	123/82/120	84/78/123	109/129/137	123/111/124
	Outdoor stay time (min) 5th grade	76/42/49	73/109/58	51/98/71	102/81/110
	Outdoor stay time (min) 8th grade	NA/6/14	24/11/46	22/28/11	30/11/28
	Percent in MVPA of the outdoor time (mean)	55.6/52.4/56.4	56.2/47.6/51.9	52.3/30.4/44.2	45.9/40.9/41.2

*Weather index: 1 = cloudless, 2 = partly cloudy, 3 = white cloudiness, 4 = grey cloudiness, 5 = precipitation.