date,value,node
00:55:15,68.38,node1
00:55:15,55.61,node2
00:55:15,74.00,node3
00:55:30,74.20,node1
00:55:30,77.60,node2
00:55:30,74.80,node3
00:55:45,74.60,node1
00:55:45,72.80,node2
00:55:45,77.00,node3
00:56:00,73.60,node1
00:56:00,75.00,node2
00:56:00,76.98,node3
00:56:15,75.82,node1
00:56:15,75.40,node2
00:56:15,76.00,node3
00:56:30,75.60,node1
00:56:30,74.59,node2
00:56:30,74.01,node3