They have been stored indoors in dry conditions.
In the first photo the longest piece on the right is 4.5 cm x 5.5cm x 61cm; the shortest piece in the middle is 5cm x 6cm x 35.5cm; the piece on the left has a split along half its length and is 6cm x 6cm at the good end x 40cm long.
In the second and third photos the single piece is 45mm x 67mm x 725mm - 740mm