Methods and apparatus for session building from ping-level data

A method to build a session from ping-level data, the method comprising:

• determining, by executing an instruction with a processor, a threshold based on reference sessions represented in panel data obtained from panel meters;
• determining, by executing an instruction with a processor, that a first ping from a device corresponds to a start ping of the session based on (i) the threshold and (ii) first payload data from the first ping;
• determining, by executing an instruction with a processor, that a second ping from the device corresponds to an end ping of the session based on (i) the threshold and (ii) second payload data from the second ping;
• and
• determining, by executing an instruction with a processor, a duration of the session based on a difference between a first time associated with the first ping and a second time associated with the second ping.

At least one non-transitory computer readable medium comprising instructions that, when executed, cause at least one processor to at least:

• determine a threshold based on reference sessions represented in panel data obtained from panel meters;
• determine that a first ping from a device corresponds to a start ping of a session based on (i) the threshold and (ii) first payload data from the first ping;
• determine that a second ping from the device corresponds to an end ping of the session based on (i) the threshold and (ii) second payload data from the second ping;
• and
• determine a duration of the session based on a difference between a first time associated with the first ping and a second time associated with the second ping.