Date,Alice,Bob,Claire,David
1/1/2019,14,10,18,9
1/15/2019,16,11,19,10
2/1/2019,15,11,18,12
2/15/2019,17,10,19,11
3/1/2019,14,15,19,14
3/15/2019,15,13,20,13
4/1/2019,13,12,19,14
4/15/2019,15,12,19,15
5/1/2019,16,13,17,14
5/15/2019,17,11,18,15