Summary statistics for parkwork dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 1,002 28.8982 16.09852 1 56 st_case | 1,002 289624.4 160910.9 10074 560026 veh_no | 1,002 2.636727 1.128935 1 11 pve_forms | 1,002 1.284431 .5455635 1 6 pnumoccs | 1,002 .239521 .8624217 0 18 -------------+--------------------------------------------------------- pday | 1,002 16.34631 8.683975 1 31 pmonth | 1,002 6.695609 3.38507 1 12 phour | 1,002 11.92715 8.906871 0 99 pminute | 1,002 27.70958 17.9496 0 99 pharm_ev | 1,002 18.86028 12.77401 1 59 -------------+--------------------------------------------------------- pman_coll | 1,002 .9540918 2.177418 0 11 ptype | 1,002 2.489022 .5496155 2 4 phit_run | 1,002 0 0 0 0 preg_stat | 1,002 32.03293 21.34044 0 99 powner | 1,002 5.919162 .5710744 0 9 -------------+--------------------------------------------------------- pmake | 1,002 35.5489 27.90257 2 99 pmodel | 1,002 377.3772 324.3447 1 999 pmak_mod | 1,002 35926.28 28075.7 2403 99999 pbodytyp | 1,002 25.28144 25.49836 1 99 pmodyear | 1,002 2240.314 1363.75 1950 9999 -------------+--------------------------------------------------------- pvin | 0 pvin_1 | 0 pvin_2 | 0 pvin_3 | 0 pvin_4 | 0 -------------+--------------------------------------------------------- pvin_5 | 0 pvin_6 | 0 pvin_7 | 0 pvin_8 | 0 pvin_9 | 0 -------------+--------------------------------------------------------- pvin_10 | 0 pvin_11 | 0 pvin_12 | 0 pvintype | 0 pvinmake | 0 -------------+--------------------------------------------------------- pvina_mod | 0 pvin_bt | 0 pvinmodyr | 949 36.63541 42.83503 0 99 pvin_lngt | 953 16.89192 .8159825 6 17 pvin_wgt | 517 3231.822 969.7692 0 5928 -------------+--------------------------------------------------------- pwgtcd_tr | 405 3.676543 2.792594 1 8 pwhlbs_lg | 920 319.7761 710.8726 0 2960 pwhlbs_sh | 920 1035.853 394.3426 0 1780 pser_tr | 0 pfuecode | 0 -------------+--------------------------------------------------------- pmcycl_ds | 9 932.2222 378.2006 599 1500 pcarbur | 0 pcylinder | 0 pdisplace | 0 pmcycl_cy | 0 -------------+--------------------------------------------------------- pmcycl_wt | 0 ptire_sze | 0 pton_rat | 0 ptrk_wt | 0 ptrkwtvar | 0 -------------+--------------------------------------------------------- pvin_rest | 0 pwhldrwhl | 0 ptrailer | 1,002 .1357285 .5772415 0 9 pmcarr_i1 | 1,002 10.82834 25.71853 0 99 pmcarr_i2 | 0 -------------+--------------------------------------------------------- pmcarr_id | 0 pgvwr | 1,002 .5129741 1.221 0 9 pv_config | 1,002 1.389222 7.944123 0 99 pcargtyp | 1,002 4.342315 18.64189 0 99 phaz_inv | 1,002 1.000998 .0315912 1 2 -------------+--------------------------------------------------------- phazplac | 1,002 .001996 .0631824 0 2 phaz_id | 1,002 1.989022 62.96126 0 1993 phaz_cno | 1,002 .002994 .0947736 0 3 phaz_rel | 1,002 .000998 .0315912 0 1 pbus_use | 1,002 .3113772 5.365265 0 98 -------------+--------------------------------------------------------- psp_use | 1,002 .0439122 .5097137 0 8 pem_use | 1,002 .00499 .0704988 0 1 punderide | 1,002 0 0 0 0 pimpact1 | 1,002 17.94012 25.74276 1 99 pimpact2 | 1,002 21.68962 30.23637 0 99 -------------+--------------------------------------------------------- pveh_sev | 1,002 4.363273 2.268617 0 9 ptowed | 1,002 3.257485 2.19562 1 9 pm_harm | 1,002 13.75449 6.42031 2 54 pveh_sc1 | 1,002 .4381238 4.170764 0 42 pveh_sc2 | 1,002 0 0 0 0 -------------+--------------------------------------------------------- pfire | 1,002 .0129741 .1132189 0 1 pdeaths | 1,002 .0289421 .2100394 0 4 by Jean Roth , jroth@nber.org , 18 Apr 2016