The PSID Immigration Series Information zip file consists of one data file with 20 variables a total of 9,207 records for the 2021 wave. The first variable is a release number. The second variable is the key needed to merge with the Public Release version of the 2021 Family File and the final eighteen variables are the sensitive variables themselves. The Immigration Series Information file contains responses for questions IMM13-IMM17 in the PSID-2021 Questionnaire, which correspond to variables ER81275-ER81283 and ER81328-ER81336 in the PSID-2021 Codebook.   These data are publicly available as packaged data and in the online Data Center for PSID-2021. The reports of sensitive information are available for download from the packaged data page pending approval of the sensitive data application.