24 1001 Brian Heikes University of Rhode Island Formaldehyde From Coil Collection SONEX 1 1 1997 10 15 1998 03 18 0 mid-time of sample in UT s 3 1.0 1.0 1.0 999999 999999 99999 start-time of sample in UT (s) end-time of sample in UT (s) CH2O (pptv) 3 data for exchange reported data is not positive definite negative values denote lower limit of detection or upper limit of detection 4 Formaldehyde measurements used the method of Lazrus, et al., 1988. data below detection limit, ch2o=50, reported as -888 data greater than that which is recordable is reported as -777 mid start stop ch2o 45330 45180 45480 99999 45930 45780 46080 -888 46530 46380 46680 -888 47130 46980 47280 58 47730 47580 47880 73 48330 48180 48480 -888 48930 48780 49080 -888 49530 49380 49680 -888 50130 49980 50280 -888 50730 50580 50880 95 51330 51180 51480 -888 51930 51780 52080 -888 52530 52380 52680 90 53130 52980 53280 -888 53730 53580 53880 59 54330 54180 54480 -888 54930 54780 55080 120 55530 55380 55680 145 56130 55980 56280 -888 56730 56580 56880 58 57330 57180 57480 -888 57930 57780 58080 -888 58530 58380 58680 -888 59130 58980 59280 -888 59730 59580 59880 -888 60330 60180 60480 -888 60930 60780 61080 61 61530 61380 61680 -888 62190 62040 62340 -888 62790 62640 62940 99999 63390 63240 63540 99999