Raw data sets used in "Fish production and climate: sprat in the Baltic Sea" by Brian R. MacKenzie and Fritz W. Koester. The data.txt file is a tab-separated ascii file. Column definitions: 1 = year 2 = recruitment (1000s of 1-year olds; the numbers have been shifted back one year to year of birth) 3 = spawning stock biomass (tonnes) 4 = landings of sprat by commercial fishery (1000s of tonnes) 5 = May temperature (ºC) in Bornholm Basin at depth of 45-65 m 6 = maximal area of ice coverage of the Baltic Sea (1000s of km2) 7 = North Atlantic Oscillation index averaged for the months of January and February Missing values or cases where values not used in analyses are represented as "-99". 1 2 3 4 5 6 7 year rec (1000s) ssb (t) landings (1000s t) May temp. 45-65 m ice area (1000s km2) NAO (Jan.-Feb.) 1950 -99 -99 -99 3.19 113 1.93 1951 -99 -99 -99 3.95 149 0.875 1952 -99 -99 -99 3.50 120 0.535 1953 -99 -99 -99 3.32 153 0.26 1954 -99 -99 -99 2.50 272 0.335 1955 -99 -99 6 2.22 152 -1.69 1956 -99 -99 7 1.9 398 -1.86 1957 -99 -99 20 3.45 169 1.805 1958 -99 -99 30 1.84 196 0.17 1959 -99 -99 35 4.21 90 0.655 1960 -99 -99 30 4.51 241 -0.85 1961 -99 -99 40 4.84 53 2.76 1962 -99 -99 60 2.62 160 1.605 1963 -99 -99 110 0.95 355 -2.995 1964 -99 -99 100 2.38 150 0.4 1965 -99 -99 105 3.14 153 -1.51 1966 -99 -99 85 1.76 374 -0.695 1967 -99 -99 90 4.27 183 0.87 1968 -99 -99 140 3.07 214 0.06 1969 -99 -99 150 2.55 265 -2.4 1970 -99 -99 160 1.99 370 -0.03 1971 -99 -99 165 3.37 157 0.39 1972 -99 -99 180 3.93 180 -0.36 1973 80974872 -99 -99 4.79 99 1.3 1974 35012980 877930 -99 5 94 2.22 1975 184852928 713025 -99 5.36 74 1.42 1976 39349568 435472 -99 3.06 164 1.02 1977 14967399 702837 -99 3.35 190 -1.04 1978 35171704 583469 -99 2.93 193 -0.77 1979 21110056 349387 -99 1.25 325 -1.92 1980 56321352 214279 -99 2.53 260 -0.55 1981 36184100 158303 -99 3.36 175 1.02 1982 150315856 176834 -99 3.15 255 0.77 1983 57875716 202274 -99 4.13 117 1.79 1984 32738194 391180 -99 2.9 187 2.13 1985 13643529 457949 -99 1.27 355 -1.56 1986 47915640 437935 -99 1.77 337 -1.28 1987 10054936 353839 -99 1.03 405 -1.18 1988 54460608 392510 -99 4.32 149 0.21 1989 62644532 405011 -99 5.04 52 3.57 1990 62922060 557707 -99 5.76 67 4.31 1991 88893312 780903 -99 3.71 122 0.93 1992 98387032 1035753 -99 5.21 66 1.91 1993 63386148 1315381 -99 4.08 70 2.01 1994 260938368 1339215 -99 3.07 206 0.68 1995 177545376 1277155 -99 4.79 68 2.92 1996 42138476 1591604 -99 2.71 262 -1.7 1997 176148960 1690384 -99 4.69 128 1.66 1998 20057268 1209511 -99 4.88 129 1.08 1999 139367216 1256974 -99 4.91 157 1.35