I think of the spreadsheet like a jigsaw puzzle. If you have only the corners and edge pieces, it's pretty hard to see what the picture is. But if you have pieces spread here and there all over the puzzle, it becomes easier to decipher the picture. That's exactly what the spreadsheet is for us. It helps us to see what the Lantus is doing when we can see the past 3 or more days with a sprinkling of tests here and there. Right now you've done a super job of getting tests in - it's giving us edge pieces and a couple of stripes down the middle of the "puzzle." It would really help to see some variety in the test times. Does your schedule allow you to get some different times? Your plan for a +4 and +8 today is super.
I'd suggest one day getting a +2 or +3, then maybe a +5 (since you have a lot of +6's), or +8, and then in the evening cycle get some different times, maybe a +4 or right before you go to bed. Your total per day doesn't necessarily need to be more tests, just vary the times. Does that make sense?