LON APR

LAT APR

LON MAY

LAT MAY

LON JUN

LAT JUN

1948-58

53

22

47

23

56

46

1958-68

54

22

50

22

55

41

1968-78

55

20

46

19

56

43

1978-88

57

20

48

22

57

41

1988-98

56

20

47

23

60

49

1998-2008

57

21

47

23

52

44

2008-2014

58

19

46

23

52

43