After an initial movement 2 days ago an ice-jam prevented full movement of the tripod and the clock was not stopped. However, the Tanana River officially broke up on April 24th at 2:25 P.M. Alaska Standard Time.
Tripod moved but not moving
Not free of ice but no more tripod:
So how does this extended date fit in with previous data.
one timed from start of year
this one timed from vernal equinox
Seems to be following a declining period with a few early peaks