1.1.make.import.data    making and importing data
1.2.export.data         exporting PEMS data
2.1.pems.structure      'pems' object structure
3.1.generic.pems.handlers
                        Generic handling of pems objects
3.2.generic.pems.element.handlers
                        Generic handling of pems.element objects
4.1.merge.data.pems     Merging data and pems objects
4.2.referencing.pems.data
                        Data Referencing Functions.
4.3.time.handlers       pems Data Time Handlers
4.4.unit.handlers       data unit handlers
5.1.pems.plots          Various plots for pems.utils
6.1.common.calculations
                        Common calculations
6.2.common.check.functions
                        common check... functions
6.3.corrections         Corrections
6.4.analysis.summary.reports
                        Generating summary reports
7.1.vsp.code            Vehicle Specific Power (VSP) related code
7.2.emissions.calculations
                        Emission calculations
7.3.coldstart.code      Cold Start Emissions related code
7.4.speed.em.code       Speed Emissions related code
8.1.example.data        example data for use with pems.utils
8.2.look-up.tables      reference data for use with pems.utils
9.1.pems.tidyverse.tools
                        Functions to use tidyverse code with pems.utils
                        outputs
pems.utils-package      pems.utils
