Historical orthoimages of Biscay

• Ortho-corrected aerial images of the Historical Territory of Biscay for the years 1956, 1965, 1970, 1975, 1983, 1990, 1995, 1999 and 2002. ORTHO_PCB_1956: 0.25m pixel orthoimage generated in 2019 with the contacts of the flight used for Cadastre 1956 of approximate scale 1:12000 with undetermined date between 1953 and 1955. ORTHO_PCB_1965: 0.50m pixel orthoimage generated in 2015 from 3 partial flights of the Historical Territory of Biscay made in 1963 and 1965. Approximate flight scale 1:20.000. ORTHO_PCB_1975: 0.10m pixel orthoimage generated in 2018 from the May 1975 flight at scale 1:7000. ORTHO_PCB_1983: 0.50m pixel orthoimage generated in 2015 from the June 1983 flight at scale 1:18000. ORTHO_PCB_1990: 0.35m pixel orthoimage generated in 2016 from the May 1990 flight at scale 1:18000. ORTHO_PCB_1995: 0.35m pixel orthoimage generated in 2016 from the June 1995 flight at scale 1:18000. ORTHO_PCB_1999: 0.25m pixel orthoimage generated in 2020 from the June 1999 flight at scale 1:18000. ORTHO_PCB_2002: 1m pixel orthoimage generated in 2002 from the March 2002 flight at a scale of 1:18000.