id_ 4h_ago__________________2h_ago_______________now frzn%
 1-1 ..XXXXXXXXXXX............XXXXXXXXXX..XXXXXXXXXXX (66%)
 1-2 ...........XXXXXXXXXXXX...........XXXXXX....XXXX (45%)
 1-3 ........XXXXXXXXXXX...XXXXXXXX..XXXXXXXXXX....XX (64%)
 1-4 XXXX........XXXXXXXXXXXX........XXXXXXXXXX..XXXX (62%)
 2-1 .....XXXXXXXX.......XXXXXXXXXXXX................ (41%)
 2-2 ..XXXXXXXXXXXX......XXXXXXXX......XXXXXXXXXXXX.. (66%)
 2-3 ....................XXXXXXX.....XXXXXXXXXX..XXXX (43%)
 2-4 XXXXX..XXXXXXX......XXXXXXXXXXX..XXXXXXX....XXXX (70%)
 2-5 ..XXXXXXX...XXXXXXXX............XXXXXXXXXXX...XX (58%)

X marks the frost.
O means offline.