A casting form suspendable from a form support and reinforcement member erected on a substrate for forming a cast-in-place columnar member. By an information collection unit, network packets and network traffic logs are collected. A chaining variable initial conversion unit receives chaining variable data and converts the chaining variable data into initial state data. The selected recovery time may correspond to a first time when a first database was backed up. 7, a hindered amine compound, and an organic peroxide, and an adhesive tape thereof are provided.