Just to add: I’ve now measured the power consumption of the pico indoor as well. During measurement, just below 40 mA. Measurement takes about 5s. During deep sleep, just below 30 uA. (I haven’t measured power consumption during WiFi interaction.) For us, that’s a fantastically low power consumption.
If the environ indoors had enough capacity to store the data (cf. Raspberry Pi Pico - why does free space show as 848 kB? (and advice on how to add an SD card to an enviro indoor) - #10 by bablokb), this would be perfect. Ideally, separate power to the RTC as well, so that they can be configured separately.