15:45
Letby refuses to answer a question - as judge ends early
The court is being shown an image of nursery two in a state of almost total darkness.
Nick Johnson, the prosecution barrister, asks if this is an accurate representation of what it was like on 12/13 October, when Letby is alleged to have attacked Child I.
"No," says Letby.
The cot has a tent-like structure over it - Letby says this is to "minimise bright light" to the baby.
"There is almost nothing to see," Mr Johnson says.
"Just her hands and face," Letby replies.
"Which could have been covered by that tent-like structure," Mr Johnson says,
"Not entirely no," says Letby.
She refutes what a colleague previously said - the colleague said people "can't see anything" from that doorway.
'Maybe I spotted something that XX wasn't able to spot. The rooms are never that dark that you can't see the baby at all,' Letby previously said in a police interview.
She now says she had more experience "so knew what I was looking for".
"What do you mean by that," Mr Johnson asks.
There is silence as Letby refuses to answer the question.
Letby then says she is finding it "quite hard to concentrate on all of the dates".
The judge then concludes proceedings early, "having observed the witness" he says it has been a "long day" for Letby.
15:46
Court is adjourned early
It will resume again at 10.30am on Tuesday morning.
Lucy Letby, a former neonatal nurse, has been back in court for another day of cross-examination by the prosecution on Friday. She is accused of the murder of seven babies and the attempted murder of 10 others, and denies all the charges.
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