Figure 20.3. Stem-and-leaf plot of the tree-ring dates, Roy's Ruin, Site Testing Program

Figure 20.3. Stem-and-leaf plot of the tree-ring dates for Roy's Ruin. Each numeric digit in the bars of the histogram represents the third digit of one tree-ring date.

A.D.
990s     99    2
**
1050s    105 1
**
1080s    108 1
1190s
1100s    110 35
**
1130s    113 88
1140s    114 4
1150s
1160s    116 2237
1170s
1180s    118 5
1190s    119 7
1200s    120 466
1210s    121 233
1220s    122 3

Key:
** = break in scale of y-axis of 30 years or more
underlined = cutting date
unmarked = noncutting date