**VERY
IMPORTANT:** Your graph must be tall to prevent overcrowding. Follow
these instructions carefully!

**A.
Graph Paper **

Use 2 1/2 sheets of 8 1/2 x 11 graph paper. This will allow one inch
per day-length hour.

**B.
Vertical Axis**

Tape 2 1/2 graph sheets together, so the resulting graph is 27 1/2"
tall. The left edge of your graph (the 27 1/2" side, which is the
vertical axis) will indicate day length hours. Allow space for 24 day length
hours in total. At the lower left, begin with 0 hours of day length.
Go up the vertical axis to 24 hours, and allow 4 squares for each hour.

**C. Horizontal Axis**

The bottom of your graph (the 8 1/2 inch side, which is the horizontal
axis), will denote the dates of your Monday readings. Mark 11 weeks
along the bottom, allowing three squares per week. Write the following
dates for your Friday readings along the bottom of the graph: