A heat roller is configured to have a heat insulating member 4 and a metal member formed on the heat insulating member. The laminate film could further have additional layers such as a second polyolefin resin-containing layer, a metal layer, or combinations thereof. The method then provides a notification of the potential congestion, if there is a potential congestion for the network element of the wireless communication network. A correction factor is calculated based at least in part on a difference of the first attitude measurement and the second attitude measurement. The base also has a central main hole and a plurality of auxiliary holes so that a pole can be inserted through at least one of the tubes and through the main hole so as to be perpendicular to the ground, or through one of the auxiliary holes so as to be non-perpendicular to the ground.