Parsing multiple LiDAR data based on GPS time stamp

[ajay1606]

Acquired data from multiple Velodyne Puck 16 attached with GARMIN GPS module to enable time-synchronized data. Multiple LiDAR data acquired using ROS bag and trying to merge the data based on attached time stamp data. But I couldn't find any way to parse the data using a GPS time stamp. Could anyone please suggest, how can I parse the data synchronized with the GPS time stamp?

To acquire data: Velodyne driver launch modified with following params <arg name="gps_time" default="true" />

Kind regards, Ajay