remove nan
remove nan


Former-commit-id: e338d9de81e453c7838db3de1a6e815a695ce62f [formerly e8a60b69868ffe6c32ea00e9845ea58667f0b467] [formerly e8a60b69868ffe6c32ea00e9845ea58667f0b467 [formerly e8a60b69868ffe6c32ea00e9845ea58667f0b467 [formerly e252a869f21f9b1ad3e1d4c703b45fe3f674ce80]]]
Former-commit-id: 9d9751817c84c46695525f35392299760087b042
Former-commit-id: 1827969622ba8613aaac93341999b84649b08d67 [formerly b215db7937f5ab0fde44de982437513f500c6dba]
Former-commit-id: dc7d583d260755285f57637bed7261d28c65e232
interrogator/corpkit,interrogator/corpkit