You can do this using Trend View Export and Excel today. Since you don't care about time, it would be historical data anyway.
But the export contains time stamps so you COULD even take into account time using Excel's data analysis tools. Trust me, they can do WHATEVER you think you want Designer should do - and do it today. :-D
Here's a sample CSV export:
Date,Time,DST1,DST0
2019/5/21,16:04:17.264,574,13942
2019/5/21,16:04:18.264,605,15520
2019/5/21,16:04:19.264,604,17116
2019/5/21,16:04:20.264,606,18710
2019/5/21,16:04:21.264,606,20313
2019/5/21,16:04:22.264,605,21933
2019/5/21,16:04:23.264,606,23504
2019/5/21,16:04:24.264,605,25091
2019/5/21,16:04:25.264,606,26685
2019/5/21,16:04:26.264,606,28287
2019/5/21,16:04:27.264,606,29874
2019/5/21,16:04:28.264,605,31469
2019/5/21,16:04:29.264,605,33064
2019/5/21,16:04:30.264,605,34657
2019/5/21,16:04:31.264,606,36214
2019/5/21,16:04:32.264,606,37852
2019/5/21,16:04:33.264,605,39449
2019/5/21,16:04:34.264,605,41052
2019/5/21,16:04:35.264,605,42639
2019/5/21,16:04:36.264,606,44234
2019/5/21,16:04:37.264,606,45830
2019/5/21,16:04:38.264,606,47426
2019/5/21,16:04:39.264,606,49021