@techreport{TR-IC-PFG-17-04, number = {IC-PFG-17-04}, author = {Matheus Susin and Lucas Francisco Wanner}, title = {{Time synchronization under temperature and distance variations}}, month = {July}, year = {2017}, institution = {Institute of Computing, University of Campinas}, note = {In English, 18 pages. \par\selectlanguage{english}\textbf{Abstract} The Trustful Space-Time Protocol (TSTP) allows for time synchronization to be performed upon receiving any message from another node in a sensor network, removing the need for explicit messages. Previous work has shown that TSTP performs well under controlled experimental environments. In this work, we analyze how the quality of synchronization in TSTP is affected when nodes are communicating over varying distances, and across a temperature gradient. The results show that, while distance and packet loss has only a small effect on the quality of the synchronization, high temperatures of 80 Celsius and up can negatively affect it. Snippets of the results are presented, along with charts, statistics, and an analysis. A repository that contains all results, as well as the tools to analyze them, is available at https://gitlab.com/mathy/PFG. } }