In the time period of 1 152 days beginning September 24, 2021, the data indicates 4 operability checks were conducted for chemdata.nist.gov. Throughout all checks, the operability of chemdata.nist.gov was confirmed 4 times, as evidenced by the code 200 on November 18, 2023. As confirmed by all received replies as of November 20, 2024, there are no responses with error statuses. Chemdata.nist.gov showed a response time of 0.558 seconds on November 18, 2023, contrasting the average of 0.575 seconds.