| 2011 Annual | NSDL.org | Expert Voices | Sci Literacy Maps | NSDLnetwork.org | NSDL Roll-up |
| Visits | 374,950 | 172,789 | 41,158 | 9,379 | 933,413 |
| Unique Visitors | 312,997 | 152,884 | 25,425 | 7,210 | 756,913 |
| Pageviews | 771,487 | 283,177 | 222,781 | 25,225 | 2,192,024 |
| Pages/Visit | 2.06 | 1.64 | 5.41 | 2.69 | 2.35 |
| Avg Time on Site | 1:40 | 1.05 | 4:57 | 1.55 | 2:03 |
| New/Returning % | 82%/18% | 87%/13% | 60%/40% | 74%/26% | 80%/20% |
2011 | NSDL.org | Expert Voices | Sci Literacy Maps | NSDLnetwork.org | NSDL Roll-up* |
| December | |||||
| Visits | 29,390 | N/A | 2,488 | 671 | 64,685 |
| Unique Visitors | 25,900 | 1,945 | 553 | 54,629 | |
| Pageviews | 54,923 | 12,030 | 1,863 | 154,983 | |
| Pages/Visit | 1.87 | 4.84 | 2.78 | 2.4 | |
| Avg Time on Site (minutes) | 1:30 | 3.55 | 1.56 | 2:10 | |
| November | |||||
| Visits | 19,015 | - | 4,233 | 736 | 65.505 |
| Unique Visitors | 16,834 | - | 3,247 | 640 | 54,149 |
| Pageviews | 37,597 | - | 19,354 | 2,244 | 178,341 |
| Pages/Visit | 1.98 | - | 4.57 | 3.05 | 2.72 |
| Avg Time on Site | 1:39 | - | 4:17 | 2:05 | 2.34 |
| Notes: Influencing events during month: NSDL infrastructure transition; 3-4 day downtime on certain services; LearningRegistry release date (Nov 7) announcement | |||||
| October 1-26 | |||||
| Visits | 33,772 | 3,391 | 4,925 | 602 | 85,463 |
| Unique Visitors | 29,401 | 3,144 | 3,807 | 525 | 71,040 |
| Pageviews | 73,967 | 5,738 | 24,003 | 1,477 | 247,707 |
| Pages/Visit | 2.19 | 1.69 | 4.87 | 2.45 | 2.90 |
| Avg Time on Site | 1.51 | 1:07 | 4:32 | 1.37 | 2.32 |
Notes: In late October, Expert Voices was decommissioned, as part of planned technology infrastructure transfer from Cornell University to UCAR | |||||
| September | |||||
| Visits | 8,072 | 16,918 | 3,607 | 543 | 89,336 |
| Unique Visitors | 7,258 | 15,402 | 2,813 | 458 | 71,931 |
| Pageviews | 10,180 | 28,839 | 16,558 | 1,291 | 221,512 |
| Pages/Visit | 1.26 | 1.70 | 4.59 | 2.38 | 2:57 |
| Avg Time on Site | 0:37 | 1:06 | 4:10 | 1:15 | 2:16 |
| August | |||||
| Visits | 5,671 | 12,041 | 2,845 | 584 | 63,603 |
| Unique Visitors | 5,057 | 10,682 | 2,044 | 517 | 52,458 |
| Pageviews | 6,875 | 20,953 | 13,148 | 1,130 | 162,564 |
| Pages/Visit | 1.21 | 1.74 | 4.62 | 1.93 | 2.56 |
| Avg Time on Site | 0:44 | 1:06 | 4:20 | 1:08 | 2:17 |
| July | |||||
| Visits | 7,606 | 9,687 | 3,243 | 545 | 62,039 |
| Unique Visitors | 6,859 | 8,930 | 2,051 | 491 | 49,824 |
| Pageviews | 9,355 | 16,134 | 17,954 | 1,016 | 162,300 |
| Pages/Visit | 1.23 | 1.67 | 5.54 | 1.86 | 2.62 |
| Avg Time on Site | 0:36 | 1:06 | 5:14 | 0.56 | 2:23 |
| June | |||||
| Visits | 9,960 | 12,184 | 3,509 | 721 | 70,129 |
| Unique Visitors | 9,057 | 11,031 | 1,961 | 570 | 56,900 |
| Pageviews | 12,322 | 20,137 | 23,262 | 1,708 | 168,358 |
| Pages/Visit | 1.24 | 1.65 | 6.63 | 2.37 | 2.40 |
| Avg Time on Site | 0:43 | 1:13 | 6:41 | 2:10 | 2:19 |
| May | |||||
| Visits | 13,690 | 15,600 | 2,719 | 805 | 78,107 |
| Unique Visitors | 12,668 | 14,008 | 1,665 | 636 | 65,354 |
| Pageviews | 17,168 | 25,131 | 17,122 | 2,244 | 180,077 |
| Pages/Visit | 1.25 | 1.61 | 6.30 | 2.79 | 2.31 |
| Avg Time on Site | 0:39 | 1:04 | 5:26 | 2:33 | 2:01 |
| April | |||||
| Visits | 17,634 | 20,620 | 2,655 | 998 | 73,876 |
| Unique Visitors | 16,541 | 18,460 | 1,652 | 768 | 63,260 |
| Pageviews | 21,761 | 33,237 | 15,205 | 2,677 | 151,132 |
Pages/Visit | 1.23 | 1.61 | 5.73 | 2.68 | 2.05 |
| Avg Time on Site | 0:47 | 1:04 | 4.48 | 1:46 | 1:40 |
| March | |||||
| Visits | 33,642 | 32,296 | 3,604 | 1,054 | 110,042 |
| Unique Visitors | 31,309 | 29,359 | 2,385 | 853 | 96,188 |
| Pageviews | 40,488 | 52,056 | 20,461 | 2,322 | 210,361 |
Pages/Visit | 1.20 | 1.61 | 5.68 | 2.20 | 1.91 |
| Avg Time on Site | 0:40 | 1:02 | 5.15 | 2:03 | 1:30 |
| February | |||||
| Visits | 26,656 | 25,172 | 3,695 | 1,132 | 91,856 |
| Unique Visitors | 24,622 | 22,683 | 2,196 | 865 | 79,215 |
| Pageviews | 31,730 | 40,563 | 22,244 | 4,107 | 185,508 |
| Pages/Visit | 1.19 | 1.61 | 6.02 | 3.63 | 2.02 |
| Avg Time on Site | 0.40 | 1:06 | 5:54 | 1:59 | 1:41 |
| January | |||||
| Visits | 21,379 | 24,864 | 3,635 | 988 | 81,773 |
| Unique Visitors | 19,584 | 22,463 | 2,547 | 789 | 70,699 |
| Pageviews | 25,471 | 40,370 | 21,440 | 3,146 | 169,182 |
| Pages/Visit | 1.19 | 1.62 | 5.90 | 3.18 | 2.07 |
| Avg Time on Site | 0.45 | 1:01 | 4:54 | 2:33 | 1:40 |