###Introduce
This is a dataset of trajectories with time , totally 44w records.
$ cat data.tar.gz* > data.tar.gz
$ tar -zxvf data.tar.gz
###Sample
11643928:3998332:1427845027,11643927:3998330:1427845032
11630984:3990944:1427859207,11631009:3990897:1427859212
11631015:3990850:1427859221,11631016:3990801:1427859227
11631016:3990749:1427859232,11631016:3990701:1427859236
......