https://db.csail.mit.edu/labdata/labdata.html

This page contains information about data collected from 54 sensors deployed in the Intel Berkeley Research lab between February 28th and April 5th, 2004.

The x and y coordinates of sensors (in meters relative to the upper right corner of the lab) are given in this file. The three columns correspond to mote id, x location, and y location.

This file includes a log of about 2.3 million readings collected from these sensors. The file is 34MB gzipped, 150MB uncopressed. The schema is as follows:

date:yyyy-mm-dd | time:hh:mm:ss.xxx | epoch:int | moteid:int | temperature:real | humidity:real | light:real | voltage:real

In this case, epoch is a monotonically increasing sequence number from each mote. Two readings from the same epoch number were produced from different motes at the same time. There are some missing epochs in this data set. Moteids range from 1-54; data from some motes may be missing or truncated. Temperature is in degrees Celsius. Humidity is temperature corrected relative humidity, ranging from 0-100%. Light is in Lux (a value of 1 Lux corresponds to moonlight, 400 Lux to a bright office, and 100,000 Lux to full sunlight.) Voltage is expressed in volts, ranging from 2-3; the batteries in this case were lithium ion cells which maintain a fairly constant voltage over their lifetime; note that variations in voltage are highly correlated with temperature.

We extract data from the same epoch (same time): moteid is the location
