Methods and apparatus to generate media exposure maps of media environments

At least one non-transitory computer readable medium comprising instructions that, when executed by one or more processors, cause performance of at least:

• determining that an angle timestamp associated with an angle measurement is within a time window of monitored data timestamps corresponding to monitored media exposure data associated with a media exposure environment, the angle measurement between a portable meter and a device meter, the angle measurement from at least one of the portable meter or the device meter, the monitored media exposure data from at least one of the portable meter or the device meter;
• and
• generating media exposure map based on the angle measurement.

A method comprising:

• determining, by executing an instruction with at least one processor, that an angle timestamp associated with an angle measurement is within a time window of monitored data timestamps corresponding to monitored media exposure data associated with a media exposure environment, the angle measurement between a portable meter and a device meter, the angle measurement from at least one of the portable meter or the device meter, the monitored media exposure data from at least one of the portable meter or the device meter;
• and
• generating, by executing an instruction with the at least one processor, a media exposure map based on the angle measurement.