Characteristics of the Wiechert horizontal astatic seismograph weighing 1000 kg at Toledo

 
 

Component	Mass (kg)	Tp	Vo	Damp.	From	To	Source
NE-SW,NW-S	1000	12,12	570,540	5.0,5.0	1924 07 01	1924 07 31
NE-SW, NW-	1000	12,12	420,420	5.0,5.0	1924 08 01	1924 08 31
NE-SW, NW-	1000	12,12	800,660	4.5,5.0	1924 09 01	1924 09 30
NE-SW, NW-	1000	12,12	800,660	4.5,5.0	1924 10 01	1924 10 31
NE-SW, NW-	1000	12,12	490,500	4.5,5.0	1924 11 01	1924 11 30
NE-SW, NW-	1000	12,11.5	480,490	4.5,5.0	1924 12 01	1924 12 31
NE-SW, NW-	1000	12,11.5	480,490	4.5,5.0	1925 01 01	1925 01 31
NE-SW, NW-	1000	12,12	450,450	5.0,5.0	1925 02 01	1925 02 28
NE-SW, NW-	1000	12,12	420,420	5.0,5.0	1925 03 01	1925 03 31
NE-SW, NW-	1000	11,12	570,480	4.0,5.0	1925 04 01	1925 04 30
NE-SW, NW-	1000	10,10	600,600	4.0,5.0	1925 05 01	1925 05 31
NE-SW, NW-	1000	10,10	600,600	4.5,4.5	1925 06 01	1925 06 30
NE-SW, NW-	1000	12,11	450,570	5.0,5.0	1925 09 01	1925 09 30
NE-SW, NW-	1000	12,11	450,570	5.0,5.0	1925 10 01	1925 10 31
NE-SW, NW-	1000	11,14	600,560	4.5,45	1925 11 01	1925 11 30
NE-SW, NW-	1000	13,11	510,500	5.5,5.0	1925 12 01	1925 12 31
NE-SW, NW-	1000	12,12	500,500	5.0,5.0	1926 01 01	1926 01 31
NE-SW, NW-	1000	12,12	500,500	5.0,5.0	1926 02 01	1926 02 28
NE-SW, NW-	1000	11,12	500,500	5.0,5.0	1926 03 01	1926 03 31
NE-SW, NW-	1000	11.5,11.5	500,500	5.0,5.0	1926 04 01	1926 04 30
NE-SW, NW-	1000	11.5,11.5	500,500	5.0,5.0	1926 05 01	1926 05 31
NE-SW, NW-	1000	11.5,11.5	500,500	5.0,5.0	1926 06 01	1926 06 30
NE-SW, NW-	1000	12,12	550,500	5.0,5.0	1926 07 01	1926 07 31
NE-SW, NW-	1000	12,11.5	500,500	5.0,5.0	1926 08 01	1926 08 31
NE-SW, NW-	1000	11.5,11.0	600,550	5.0,4.75	1926 09 01	1926 09 30
NE-SW, NW-	1000	11.5,11.0	600,550	5.0,5.0	1926 10 01	1926 10 31
NE-SW, NW-	1000	11.5,11.0	600,550	5.0,5.0	1926 11 01	1926 11 30
NE-SW, NW-	1000	10.0,10.0	500,490	5.0,5.0	1926 12 01	1926 12 31
N-S,E-W	1000	2.1,2.2	704,708	4.9,5.0	1936 06 01	1936 06 30
N-S,E-W	1000	2.0,2.1	700,705	5.0,4.8	1936 07 01	1936 07 31
N-S,E-W	1000	2.2,2.1	690,702	5.2,5.0	1936 08 01	1936 08 31
N-S,E-W	1000	5.2,4.7	568,579	5.2,5.0	1938 08 01	1938 08 31
E-W,N-S	1000	4.8,5	565,603	5.2,5.4	1938 09 01	1938 09 30
E-W,N-S	1000	4.9,5.2	525,481	5.3,4.5	1938 10 01	1938 10 31
E-W,N-S	1000	4.5,5	670,582	4.5,4	1938 11 01	1938 11 30
E-W,N-S	1000	4.8,5.2	537,529	5,5	1938 12 01	1938 12 31
E-W,N-S	1000	4.7,5.2	579,568	5.1,5.3	1939 08 01	1939 08 31
E-W,N-S	1000	4.8,5	565,603	5.2,5.4	1939 09 01	1939 09 30
E-W,N-S	1000	4.8,5	656,650	4.9,4.9	1939 10 01	1939 10 31
E-W,N-S	1000	3.9,3.8	598,661	5.3,4.9	1939 10 01	1939 10 31
E-W,N-S	1000	3.9,3.8	598,661	5.3,4.9	1940 01 01	1940 03 31