Time span of sample

1997.1.2 -

2001.12.31

1997.5.12 -

1999.5.18

1999.5.19 -

2001.6.14

2002.1.4 - 2012.12.31

2005.6.6 -

2007.10.16

2007.10.17 - 2008.10.28

Sample Title

Full sample A

Sub-sample A 1 (Bear)

Sub-sample A 2 (Bull)

Full sample B

Sub-sample B 1 (Bull)

Sub-sample B 2 (Bear)