Due to the tilt of the earth's axis, the length of days changes throughout the year, and if we were to plot the number of daylight hours (approximately) we would get a graph as follows: ============================= =========================== =======W=I=N=T=E=R========= =========================== ============================= =============================== ================================= =================================== ===================================== ======================================= ========================================= =========================================== ===============S=U=M=M=E=R================= =========================================== ========================================= ======================================= ===================================== =================================== ================================= =============================== ============================= =========================== =======W=I=N=T=E=R========= =========================== ============================= 5 6 7 8 9 10 11 12 1 2 3 4 5 6& 
(we; were; to plot the number of daylight hours) (we; to plot; the number of daylight hours) (we; would get; a graph) Context(we would get,List([153, 165))):(W=I=N=T=E=R========= ===========================; =============================; ================================= =================================== ===================================== ======================================= ========================================= =========================================== ===============S=U=M=M=E=R================= =========================================== ========================================= ======================================= ===================================== =================================== ================================= =============================== ============================= =========================== =======W=I=N=T=E=R========= =========================== ============================= 5 6 7 8 9 10 11 12 1 2 3 4 5 6) Context(we would get W=I=N=T=E=R ========= =========================== =============================,List([153, 329))):(================================= =================================== ===================================== ======================================= ========================================= =========================================== ===============S=U=M=M=E=R================= =========================================== ========================================= ======================================= ===================================== =================================== ================================= =============================== ============================= =========================== =======W=I=N=T=E=R========= ===========================; =============================; )
we would get,List([153, 165)) we would get W=I=N=T=E=R ========= =========================== =============================,List([153, 329))
we we we W=I=N=T=E=R========= =========================== ================================= =================================== ===================================== ======================================= ========================================= =========================================== ===============S=U=M=M=E=R================= =========================================== ========================================= ======================================= ===================================== =================================== ================================= =============================== ============================= =========================== =======W=I=N=T=E=R========= ===========================
were to plot would get ============================= =============================
to plot the number of daylight hours
the number of daylight hours
a graph
================================= =================================== ===================================== ======================================= ========================================= =========================================== ===============S=U=M=M=E=R================= =========================================== ========================================= ======================================= ===================================== =================================== ================================= =============================== ============================= =========================== =======W=I=N=T=E=R========= =========================== ============================= 5 6 7 8 9 10 11 12 1 2 3 4 5 6