Penny Masses

	A	B	C	D	E	F	G	H	I	J	K	L	M
1	Year bins		Mass bin upper edge (g)	Frequency G1	Frequency G2	Frequency G3	Frequency G4	Frequency G5	Frequency G6	Frequency G7	Frequency G8	Frequency G9	Combined Frequency
2	1954		2.00	0	0	0	0	0	0	0	0	0	0
3	1960		2.20	0	0	0	0	0	0	0	0	0	0
4	2005		2.40	0	0	0	0	0	0	0	0	0	0
5	1964	3.10	2.60	12	21	0	13	16	20	7	13	16	118
6	2000	2.49	2.80	0	0	0	0	0	0	0	0	0	0
7	1966	3.09	3.00	0	0	0	0	0	0	0	0	0	0
8	1968		3.20	10	9	0	11	14	10	5	10	5	74
9	1969		3.40	0	0	0	0	0	0	0	0	0	0
10	1970		3.60	0	0	0	0	0	0	0	0	0	0
11	1971		3.80	0	0	0	0	0	0	0	0	0	0
12	1973		4.00	0	0	0	0	0	0	0	0	0	0
13	1974			0	0	0	0	0	0	0	0	0	0
14	1995	2.50
15	1970	3.07
16	1975	3.06
17	1976	3.12
18	1981	3.15
19	1999	2.49
20	1988	2.49
21	1982	2.50
22	1994	2.52
23	2010	2.46
24	1973	3.03
25	1987
26	2015	2.49
27	1992	2.48
28	1973	3.10
29	1998	2.49
30	2003	2.50
31	2014	2.50
32	1993
33	1996
34	1997
35	1998
36	1999
37	2000
38	2001
39	2002
40	2003
41	2004
42	2005
43	2006
44	2007
45	2009
46	2011
47	2012
48	2013
49	2014
50	2015
51	2016
52	2017
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100	Year	Mass (g)