data =[
{name: 'run' ,
data: [{time: 0, rank: 0}, {time:1, rank:1}, {time:2, rank:2}, {time:3, rank:3}]
},
{name: 'walk' ,
data: [{time: 2, rank: 0}, {time:3, rank:1}, {time:4, rank:2}, {time:5, rank:3}]
},
{name: 'float' ,
data: [{time: 6, rank: 0}, {time:5, rank:1}, {time:6, rank:2}, {time:7, rank:3}]
}
]