7/16 11:10

Here is the I1 going out to the limit of absolute accuracy:
20100715 33.66239


20100716 35.20112

20100719 36.13145

20100720 36.27178

20100721 36.41742

20100722 36.30637

20100723 34.96335

20100726 33.57488

20100727 32.35731

20100728 31.96437

20100729 31.80197

20100730 31.94768

20100802 33.12613

20100803 34.77583

20100804 36.69522

20100805 38.74793

20100806 40.58552

20100809 42.17691

20100810 43.32631

20100811 44.65306

20100812 45.70546

20100813 46.2804

20100816 45.8179

20100817 44.81092

20100818 44.02602

20100819 41.4094

20100820 38.54031

20100823 35.95889

20100824 33.82167

20100825 31.94079

20100826 29.52879

20100827 27.68586

20100830 26.7774

20100831 25.81199

20100901 25.28408

20100902 25.06659

20100903 25.51281

20100906 26.69725

20100907 27.91625

20100908 29.58433

20100909 31.06375

20100910 32.49334

20100913 32.15619

20100914 31.46442

20100915 29.76997

20100916 27.14117

20100917 24.71507

20100920 22.96243

20100921 22.29074

20100922 21.8606

20100923 21.19671

20100924 21.17547

20100927 20.82228

20100928 20.55654

20100929 19.79494

20100930 18.6971

20101001 19.4164

20101004 19.8343

20101005 20.45848

20101006 20.9075

20101007 21.40699

20101008 21.63835

20101011 19.81698

20101012 17.54623

20101013 13.80057

20101014 9.866532