Table 1: The summary of MMF data 1968-2001 (with no normalization).
Observatory Years $\Delta$ (G) N S (G) k

CrAO 1968-2001 0.15 1945 0.67 0.94

MWO 1970-1982 0.07 2457 0.67 0.94

WSO 1975-2001 0.05 7952 0.41 1.54

SSO 1982-1993 0.12 313 0.77 0.82

In all 1968-2001 - 12 667 - -

**Table 1:** The summary of MMF data 1968-2001 (with no normalization).
Observatory	Years	$\Delta$ (G)	N	S (G)	k
CrAO	1968-2001	0.15	1945	0.67	0.94
MWO	1970-1982	0.07	2457	0.67	0.94
WSO	1975-2001	0.05	7952	0.41	1.54
SSO	1982-1993	0.12	313	0.77	0.82
In all	1968-2001	-	12 667	-	-

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