Moderate growth and another big move

The weather last two weeks was moderately warm (mid to upper 80s) but fairly cloudy. Several strong rains and an additional watering provided plentiful moisture supply. Results were recorded once per week. Here is an updated table including last two weeks measurements:

The overall growth remains strong with about 1 inch of length (not necessarily height) per week. Some plants started exhibiting sun-following behavior, leading to both dominant growth on the sunny side for lower branches and pronounced bending of the top branches towards South (phototropism).

#38 that would most likely get above its previous number 5 spot experienced significant phototropic effect:

#38 June 7, 2015. Top branch bending towards sun. About 2.5 years old.

It is showing disturbing black spots and other damage on the bottom of the growing cluster. Top of the growing cluster remains bright green and growing quickly. One particular damage type looks like a rupture of the branch surface. I have seen similar smaller artifacts before but this is very prominent. I have no idea what caused it.

#38 showing signs of damage.

A generous amount of chlorothalonil-based fungicide was applied on the affected areas. All other plants had some of the same fungicide treatment, just in case.

#63 was fastest vertically growing sample with a strong lead branch going straight up.

#63 June 7, 2015. About 2.5 years old.

The current leader #34 added healthy height to maintain its spot. However, the mid section of the plant looks very sparse and sick. Most of the dead branches were removed today. In the past when significant number of dead branches were removed it lead to plant's death. Will see if the leader can overcome its current condition.

#34 June 7, 2015. About 2.5 years old. Removed dead branches remaining from winter.

 #31 posted negative growth of almost an inch after it was moved to a new location. Similar to #38, it showed significant top branch bending towards the sun. Overall, it's one of the strongest samples and even with this loss remains in second spot:

#31 June 7, 2015. About 2.5 years old. Moved to 22" container.

The new location provides about ten times more volume for root growth in 22" container. Location will also provide significantly more sun exposure, close to four more hours each day.

From the two samples that lost most of the volume, #15 continues to post impressive recovery numbers. It added a little over two inches in two weeks. A very strong branch is growing from about 3 inches above ground. At this point I decided to leave the dead trunk as is without any trimming:

#15 June 7, 2015. About 2.5 years old. New branch growing rapidly next to dead trunk.