no_trans idsect lnprice surface surfsq dVFA d2006 d2007 LUX 73474 13120402 12.408 594 352836 0 1 0 0 73710 12050503 11.878 576 331776 0 0 1 0 73713 12050505 12.429 383 146689 1 1 0 1 73722 13110202 12.782 1078 1162084 0 0 1 0 73764 12070503 11.849 495 245025 0 1 0 0