Year: 2019 ( top )

Jan ( N = 428 )

Feb ( N = 4 )

May ( N = 202 )

Year: 2018 ( top )

Jan ( N = 215 )

Mar ( N = 53 )

Apr ( N = 373 )

May ( N = 432 )

Jun ( N = 414 )

Jul ( N = 433 )

Aug ( N = 434 )

Sep ( N = 419 )

Oct ( N = 428 )

Nov ( N = 421 )

Dec ( N = 416 )

Year: 2017 ( top )

Jan ( N = 267 )

Feb ( N = 203 )

Mar ( N = 250 )

Apr ( N = 341 )

May ( N = 331 )

Jun ( N = 419 )

Jul ( N = 404 )

Aug ( N = 329 )

Sep ( N = 386 )

Oct ( N = 215 )

Nov ( N = 211 )

Dec ( N = 389 )

Year: 2016 ( top )

Jan ( N = 420 )

Feb ( N = 397 )

Mar ( N = 383 )

Apr ( N = 419 )

May ( N = 426 )

Jun ( N = 412 )

Jul ( N = 426 )

Aug ( N = 366 )

Sep ( N = 418 )

Oct ( N = 365 )

Nov ( N = 209 )

Dec ( N = 159 )

Year: 2015 ( top )

Jan ( N = 430 )

Feb ( N = 341 )

Mar ( N = 422 )

Apr ( N = 419 )

May ( N = 353 )

Jun ( N = 416 )

Jul ( N = 434 )

Aug ( N = 431 )

Sep ( N = 405 )

Oct ( N = 420 )

Nov ( N = 370 )

Dec ( N = 266 )

Year: 2014 ( top )

Jan ( N = 513 )

Feb ( N = 468 )

Mar ( N = 474 )

Apr ( N = 487 )

May ( N = 515 )

Jun ( N = 508 )

Jul ( N = 386 )

Aug ( N = 398 )

Sep ( N = 352 )

Oct ( N = 408 )

Nov ( N = 233 )

Dec ( N = 297 )

Year: 2013 ( top )

Jan ( N = 145 )

Feb ( N = 161 )

Mar ( N = 264 )

Apr ( N = 293 )

May ( N = 241 )

Jun ( N = 288 )

Jul ( N = 193 )

Aug ( N = 310 )

Sep ( N = 305 )

Oct ( N = 408 )

Nov ( N = 428 )

Dec ( N = 380 )

Year: 2012 ( top )

Jan ( N = 358 )

Feb ( N = 320 )

Mar ( N = 380 )

Apr ( N = 342 )

May ( N = 359 )

Jun ( N = 358 )

Jul ( N = 367 )

Aug ( N = 334 )

Sep ( N = 326 )

Oct ( N = 329 )

Nov ( N = 292 )

Dec ( N = 303 )

Year: 2011 ( top )

Jan ( N = 378 )

Feb ( N = 326 )

Mar ( N = 334 )

Apr ( N = 377 )

May ( N = 379 )

Jun ( N = 312 )

Jul ( N = 391 )

Aug ( N = 375 )

Sep ( N = 333 )

Oct ( N = 398 )

Nov ( N = 334 )

Dec ( N = 380 )

Year: 2010 ( top )

Jan ( N = 321 )

Feb ( N = 244 )

Mar ( N = 280 )

Apr ( N = 261 )

May ( N = 387 )

Jun ( N = 320 )

Jul ( N = 349 )

Aug ( N = 333 )

Sep ( N = 360 )

Oct ( N = 351 )

Nov ( N = 373 )

Dec ( N = 381 )

Year: 2009 ( top )

Jan ( N = 359 )

Feb ( N = 87 )

Mar ( N = 7 )

Apr ( N = 218 )

May ( N = 237 )

Jun ( N = 333 )

Jul ( N = 392 )

Aug ( N = 333 )

Sep ( N = 323 )

Oct ( N = 287 )

Nov ( N = 333 )

Dec ( N = 315 )

Year: 2008 ( top )

Jan ( N = 93 )

Feb ( N = 78 )

Mar ( N = 90 )

Apr ( N = 153 )

May ( N = 321 )

Jun ( N = 343 )

Jul ( N = 354 )

Aug ( N = 346 )

Sep ( N = 333 )

Oct ( N = 368 )

Nov ( N = 342 )

Dec ( N = 351 )

Year: 2007 ( top )

Jan ( N = 84 )

Feb ( N = 84 )

Mar ( N = 92 )

Apr ( N = 87 )

May ( N = 89 )

Jun ( N = 10 )

Jul ( N = 84 )

Aug ( N = 61 )

Sep ( N = 80 )

Oct ( N = 68 )

Nov ( N = 72 )

Dec ( N = 93 )

Year: 2006 ( top )

Jan ( N = 62 )

Feb ( N = 58 )

Mar ( N = 93 )

Apr ( N = 90 )

May ( N = 93 )

Jun ( N = 90 )

Jul ( N = 93 )

Aug ( N = 90 )

Sep ( N = 90 )

Oct ( N = 92 )

Nov ( N = 90 )

Dec ( N = 73 )

Year: 2005 ( top )

Jan ( N = 93 )

Feb ( N = 81 )

Mar ( N = 32 )

Apr ( N = 90 )

May ( N = 93 )

Jun ( N = 90 )

Jul ( N = 45 )

Aug ( N = 80 )

Sep ( N = 90 )

Oct ( N = 93 )

Nov ( N = 46 )

Year: 2004 ( top )

Jan ( N = 90 )

Feb ( N = 86 )

Mar ( N = 93 )

Apr ( N = 90 )

May ( N = 93 )

Jun ( N = 90 )

Jul ( N = 93 )

Aug ( N = 93 )

Sep ( N = 90 )

Oct ( N = 93 )

Nov ( N = 89 )

Dec ( N = 93 )

Year: 2003 ( top )

Jan ( N = 93 )

Feb ( N = 79 )

Mar ( N = 93 )

Apr ( N = 88 )

May ( N = 91 )

Jun ( N = 89 )

Jul ( N = 93 )

Aug ( N = 92 )

Sep ( N = 90 )

Oct ( N = 52 )

Nov ( N = 89 )

Dec ( N = 93 )

Year: 2002 ( top )

Apr ( N = 37 )

May ( N = 93 )

Jun ( N = 90 )

Jul ( N = 51 )

Aug ( N = 28 )

Sep ( N = 88 )

Oct ( N = 86 )

Nov ( N = 90 )

Dec ( N = 86 )

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© 2012,2019 The University of New Hampshire  •  Durham, NH 03824
This material is based upon work supported by the National Science Foundation under Grant No. EF-1065029. Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.