(a).

Covariate	Mean value		Median		Minimum		Maximum
	Normal	Kc	Normal	Kc	Normal	Kc	Normal	Kc
p1area	4007 ± 1122	2113 ± 1119	3818	1916	1539	154.16	8388	7001
p2area	2694 ± 714	1289 ± 638	2703	1219	666.3	67.75	5454	3891
Aspect1	19.81 ± 5.29	12.01 ± 6.9	19.75	10.88	4.68	0.57	41.87	36.29
H1	433.4 ± 98.10	245.9 ± 119.69	432.94	241.78	121.68	27.93	649.88	635.06
H2	350.4 ± 87.90	212.8 ± 98.26	353.81	213.84	78.56	20.25	576.38	563.44
Dive1	379.7 ± 125.01	209 ± 118.34	391.5	202.38	23.25	2.75	615.78	568.0
Mslew1	119.7 ± 33.65	75.30 ± 38.09	112.25	72.38	29.25	6.75	213.0	258.25
aplhf	1.15 ± 0.23	1.68 ± 0.60	1.1	1.5	0.7	0.9	1.8	5.2