1405-5546 1405-5546 S1405-55462020000300933 10.13053/cys-24-3-3040 Colombia Colombia Colombia Colombia 00 09 2020 00 09 2020 24 3 933 956

1 2014 1–13 2 2015 10 4 4 1–14 3 2014 4 2015 36 1 1 120–132 5 2014 1–12 6 2014 154 72–80 7 2014 235–242 8 2014 26 1 1 97–107 9 2017 50 55–64 10 1991 17 99–120 11 1997 18 7 7 509–533 12 2016 20 1–14 13 2000 29–39 14 R Project 2008 15 R Studio Team 2015 16 2017 17 2009 29 2 2 111–125 18 2008 42 4 4 709–717