address=4
length=630
nondetfore=35
nondetrear=25

				# worst of 3+3		4th of 5+0..5+2
stops-from 126	318	2.3 	# 318 315 305		2.4 2.2 2.3 2.4 2.3
			   # Rev. 307 303 293		2.6 2.2
stops-from 100	162	1.7	# 148 151 146 		1.6 1.7 1.8 1.7 1.6
			   # Rev. 162 146 157		1.7 1.5
stops-from 80	83	1.1	# 50? 74 73 74		0.9 1.0 1.0 1.2 1.0
			   # Rev. 73 74	83		1.1 1.2
stops-from 70	50	1.0	# 26? 50 49 50		.7 .9 .9 1.0 1.1
			   # Rev. 32 30 29		.7 .7
stops-from 40	11	.4	# 11 11 11		.6 .3 .3 .4 .4
			   # Rev. 21 11 12 21 21 21	.6 .4 .6
stops-from 20	3	.2	# 2 3 2			too short to measure
			   # Rev. 2 13 2 2 2
stops-from 1	1

# The ones which are ~10mm longer stopping distance are where the
# first axle doesn't trigger the detection somehow, which I think (hope!)
# is due just to the particular location.