| Date - Field | Thailand - Terrain |
2008 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2007 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2006 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2005 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2004 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2003 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2002 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2001 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |
2000 January Terrain | central plain; Khorat Plateau in the east; mountains elsewhere |