Moving Data Points in Data Set

I have attached some sample data. I need help with some code to move the values in column 6. The values in column 1 are time(seconds), 2-5 are measured variables from a data acquisition device, and 6 is a manually placed marker in the data. How I currently treat this data is that I do a 3 second moving average for the entire data set, and then have my program pick the first value of each second.

The help I need, is moving the markers (column 6) to the data point corresponding to the first point of that second. I run further analysis on a set of data that includes the moving average data that is filtered to 1hz, but I still need markers to remain in my new data.

Data= [127 75.9 53.9 17.11 71.01 0 127.3 77 55.67 16.61 72.27 0 127.5 75.7 54.19 17.38 71.57 0 127.8 74.4 53.18 18.34 71.52 0 128 75.9 54.75 17.37 72.12 1 128.2 77.4 56.62 16.49 73.11 0 128.5 77.3 55.68 16.35 72.03 0 128.7 76.8 54.48 16.45 70.93 0 129 76.9 56.71 17.05 73.75 0 129.2 76.1 54.85 17.27 72.12 0 129.5 74.6 52.81 17.99 70.79 0 129.7 75.2 52.62 17.4 70.02 0 129.9 78.1 56.86 15.95 72.81 0 130.2 77.1 55.57 16.51 72.08 0 130.4 76.4 54.99 16.99 71.98 0 130.7 75.5 53.15 17.28 70.43 0 130.9 73.9 51.93 18.36 70.28 0 131.1 74.8 52.4 17.62 70.02 0 131.4 77.1 55.72 16.52 72.25 0 131.6 77.3 55.77 16.37 72.14 2 131.9 76.1 55.05 17.29 72.35 0 132.1 77.2 55.24 16.36 71.6 0];