Windspeed range, knots	Type (a)	Variance, (knots)2							Unexplained variance, (knots)2 (c)			Unexplained standard deviation, knots (d)			No. of cells scanned
		Total			Meteorological	Radar
		VV b	HH b	HV/VH b		VV	HH	HV/VH	VV	HH	HV/VH	VV	HH	HV/VH	VV	HH	HV/VH
.
e 0 to 10	A	11.2	-	-	5.7	1.9	0.9	1.2	3.6	-	-	1.9	-	-	16	-	-
e 11 to 20	A	84	9.9	10.4	12.5	1.9	.9	1.2	69.6	3.5	3.3	8.3	1.9	1.8	3	17	16
e 21 to 30	A	-	104.0	78.7	19.1	1.9	.9	1.2	-	84.0	58.4	-	9.2	7.6	-	3	3
O to 10	B	35.5	52.1	51.0	12.9	1.9	.9	1.2	20.7	38.3	36.9	4.5	6.2	6.1	4	8	8
11 to 20	B	27.4	28.5	25.3	25.8	1.9	.9	1.2	.3	1.8	1.7	.5	1.3	1.3	49	48	48
21 to 30	B	99	57.3	47.5	39.5	1.9	.9	1.2	57.6	16.9	6.8	7.6	4.1	2.6	5	2	2
O to 10	C	6.5	8.8	5.6	12.9	1.9	.9	1.2	8.3	5.0	8.5	2.9	2.2	2.9	9	1 1	9
11 to 20	C	12.5	13.2	10.2	25.8	1.9	.9	1.2	15.2	13.5	16.8	3.9	3.7	4.1	51	34	37
21 to 30	C	15.5	21.3	13.5	39.5	1.9	.9	1.2	25.9	19.1	272	5.1	4.4	5.2	2	2	1
O to 10	D	-	8.5	6.2	12.9	1.9	.9	1.2	-	S3	7.9	-	23	2.8	-	6	2
11 to 20	D	14.7	17.6	18.1	25.8	1.9	.9	1.2	13.0	9.1	8.9	3.6	3.0	3.0	28	25	26
21 to 30	D	-	66.1	-	39.5	1.9	.9	1.2	-	25.7	-	-	5.1	-	-	1	-
O to 10	BCD	15.4	22.6	27.5	12.9	1.9	.9	1.2	.6	8.8	13.4	.8	3.0	3.7	13	25	19
11 to 20	BCD	18.7	21.1	18.6	25.8	1.9	.9	1.2	9.0	5.6	8.4	3.0	24	29	128	107	111
21 to 30	BCD	75.1	44.6	36.1	39.5	1.9	.9	1.2	33.7	4.2	4.6	5.8	2.0	2.1	7	5	3
O to 10	SYN	11	8.88	10.7	27.9	1.9	.9	1.2	18.8	19.9	18.4	4.3	4.5	4.3	24	39	34
11 to 20	SYN	15.7	13.5	14.0	35.1	1.9	.9	1.2	21.3	225	223	4.6	4.7	4.7	135	130	127
21 to 30	SYN	55.8	56.2	35.4	55.8	1.9	.9	1.2	1.9	.5	21.6	1.4	.7	4.6	6	6	3
.
Totals f															332	332	316

a A-type data are for weather ships and aircraft underflights. The B-, C-, and D-type data are for ship reports of decreasing quality; SYN represents those cells for which the windspeed had to be determined from the isobaric pattern and the boundary-layer theory. The meteorological variance is lowest for type A; the same for B, C, and D; and highest for SYN.

b VV, vertical transmit, vertical receive; HH, horizontal transmit, horizontal receive; HV, horizontal transmit, vertical receive; VH, vertical transmit, horizontal receive.

c italicized numbers represent the amounts by which the sum of the meteorological-error variance and the radar-error variance exceeds the total variance.

d italicized numbers are the square roots of the corresponding values in the three corresponding preceding columns.

e O to 10 knots=0 to 5.1 m/sec; 11 to 20 knots = 5.6 to 10.3 m/sec; 21 to 30 knots=10.8 to 15.4 m/sec.

f Excluding type BCD.