millis	pdsi	system:index
0	1162360800000	0.900011	20061101
1	1162792800000	0.756812	20061106
2	1163224800000	0.595291	20061111
3	1163656800000	0.490457	20061116
4	1164088800000	0.356768	20061121
...	...	...	...
1454	1790920800000	-1.000705	20261002
1455	1791352800000	-1.095899	20261007
1456	1791784800000	-1.187303	20261012
1457	1792216800000	-1.292265	20261017
1458	1792648800000	-1.342339	20261022

1459 rows × 3 columns