Cosmic Pi – Transglobal Expedition full dataset (cleaned)

This dataset was gathered using Cosmic Pi detectors carried by the Transglobal Car Expedition from New York, across the Arctic, then to Antarctica and through South and Central America. To our knowledge this is the first ground level measurement of muons of this type. This dataset has been filtered to remove outliers (>10 muons per second, 99th percentile from the raw data set, data with invalid timestamps and invalid GPS coordinates). It complementing previously published raw data from the North Pole (see https://zenodo.org/records/13310276) and South Pole (see https://zenodo.org/records/18774704). 

The dataset comprises a portable Influxdb 1.x backup, with two sub datasets. The world map plot was generated using this library https://github.com/giorgiobasile/cosmic-pi-transglobal-viz helpfully written by giorgiobasile. Other plots included here are for illustration only, and were generated with help from Claude Code. 

A notebook containing templates for rudimentary data analysis can be found here: https://github.com/CosmicPi/TGCEWorkshop

We have the following data stored in the CosmicPiV1.8.1 measurement table:

• measurement=’CosmicPiV1.8.1′,
• DeviceID=cosmicdict[‘tags’][‘id’], Unit ID
• latitude=cosmicdict[‘fields’][‘lat’], Latitude
• longitude=cosmicdict[‘fields’][‘lon’], Longitude
• Temp=cosmicdict[‘fields’][‘Temp’], Temperature in C
• Hum=cosmicdict[‘fields’][‘Hum’], Relative Humidity in %
• Accelx=cosmicdict[‘fields’][‘Accelx’], Acceleration, X axis in m/s/s
• Accely=cosmicdict[‘fields’][‘Accely’], Acceleration, Y axis in m/s/s
• Accelz=cosmicdict[‘fields’][‘Accelz’], Acceleration, Z axis in m/s/s
• Magx=cosmicdict[‘fields’][‘Magx’], Magnetic field, X axis in Gauss
• Magy=cosmicdict[‘fields’][‘Magy’], Magnetic field, Y axis in Gauss
• Magz=cosmicdict[‘fields’][‘Magz’], Magnetic field, Z axis in Gauss
• Pressx=cosmicdict[‘fields’][‘Press’], Atmospheric pressure in mbar
• Altx=cosmicdict[‘fields’][‘Alt’], Altitude in meters
• timestamp=cosmicdict[‘time’] Time

And we also have the frequency data (how many cosmic rays detected per second) here:

• measurement=’CosmicPiV1.8.1_freq’,
• DeviceID=cosmicdict[‘tags’][‘id’], Unit ID
• geohash_pos=”””+cosmicdict[‘fields’][‘geohash’]+”””, The geohash, a short code that represents lat & lon
• event_count=cosmicdict[‘fields’][‘event_count’], The number of events in this second
• timestamp=cosmicdict[‘time’]) Time