Mine data from ad7461a. Though cal expired approx half year ago, it should not affect in adc zero noise measue. Data are srtaight, w/o any math, after well warmed, (>2h), rear input shorted with bare copper wire, every run 30 min lenght.
If matters, I can collect data for longer periods, when dmm not used.
PS: as there seems no dedicated thread for equipment's ROMs, I'll also attach dumps for tr6861, r6144, r6551. I checked function work before read.