Time spending of a PhD student

Did an investigation on how much time a phd student spend on reading textbooks/papers, learning models, understanding algorithms, programming/coding, implementing algorithms...

The information is from web resources.

1. A phd student's blog post

He settled several categorizations of his activities:

• understanding – active research, including reading, to find out specific things
• reading – reading papers and other articles without a clearly-defined purpose
• writing – thesis or other smaller piece of writing; blog posts; note-making
• coding - making plots or setting up models
• meeting – formal supervisor meetings, generally chatting to other scientists about work, going to seminars
• nowork - procrastination, or taking a break

And the time tots up of several days of each activities:

Obveriously, coding took most of the time, and that make sense for computer science is about doing scientific research with computer.

Reading stands for reading papers impurposely.