Figure 20.5. Stem-and-leaf plot of the tree-ring dates, Troy's Tower, Site Testing Program

Figure 20.5. Stem-and-leaf plot of the tree-ring dates for Troy's Tower. Each numeric digit in the bars of the histogram represents the third digit of one tree-ring date.

A.D.
840s     84    5
**
890s     89    1
**
920s     92    4
**
960s     96    0
970s
980s     98    7
990s
1000s    100 0
1010s    101 5
1020s    102 22
1030s    103 7
1040s    104 3
1050s
1060s    106 5
1070s
1080s    108 38
**
1120s    112 6
1130s
1140s    114 1
1150s
1160s    116 3
1170s    117 2
1180s    118 3
**
1220s    122 0
1230s    123 78
1240s    124 0
1250s
1260s    126 2578
1270s    127 11

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