37 1010 Talbot, Robert and Dibb, Jack University of New Hampshire Acidic Trace Gases SONEX 1 1 1997 10 13 1998 03 02 0 Midpoint of sampling interval in elapsed seconds from 00 Univeral Time on takeoff date. 6 1.0 1.0 1.0 1.0 1.0 1.0 99999 99999 99999 99999 99999 99999 Nitric Acid (HNO3) Mixing Ratio (pptv) Nitric Acid Limit of Detection (pptv) Formic Acid (HCOOH) Mixing Ratio (pptv) Formic Acid Limit of Detection (pptv) Acetic Acid (CH3COOH) Mixing Ratio (pptv) Acetic Acid Limit of Detection (pptv) 2 1.0 1.0 99999 99999 Start Time (seconds) Stop Time (seconds) 0 12 Species mixing ratios are reported in parts per trillion by volume (pptv). Species mixing ratio below stated limit of detection is indicated by 88888. Start and stop times (in Universal Time) for individual samples are reported in seconds of the day (1 day = 86400 sec.). Average uncertainties in mixing ratios are as follows: HNO3 (< 30 pptv +/- 35%; 30 - 100 pptv +/- 25%; >100 pptv +/- 20%); HCOOH (<100 pptv +/- 30% ;>100 pptv +/- 20%; CH3COOH (<100 pptv +/- 35%, >100 pptv +/- 20%). Absolute accuracy of pptv values is unknown, but we believe it to be +/- 10 - 20%. Direct questions about these data to R. Talbot or J. Dibb at: Institute for the Study of Earth, Oceans and Space, Morse Hall, University of New Hampshire, Durham, NH 03824. E-mail: robert.talbot@unh.edu or jack.dibb@unh.edu 57735 57510 57960 40 99999 58 99999 88888 20 58190 57961 58419 19 99999 26 99999 88888 21 58654 58420 58887 31 99999 29 99999 15 99999 59119 58888 59350 23 99999 63 99999 88888 22 59600 59351 59850 24 99999 39 99999 34 99999 60117 59851 60383 27 99999 11 99999 14 99999 60582 60384 60780 15 99999 36 99999 88888 21 61013 60781 61245 8 99999 36 99999 33 99999 61448 61246 61650 10 99999 18 99999 22 99999 61878 61670 62085 38 99999 96 99999 88888 22 62295 62086 62504 27 99999 97 99999 60 99999 62629 62505 62753 58 99999 47 99999 88888 20 62912 62754 63070 31 99999 73 99999 59 99999 63222 63071 63372 49 99999 57 99999 34 99999 63528 63373 63683 47 99999 98 99999 15 99999 63836 63684 63988 72 99999 55 99999 46 99999 64146 63989 64303 74 99999 96 99999 48 99999 64453 64304 64603 111 99999 84 99999 62 99999 64760 64604 64916 169 99999 189 99999 94 99999 65095 64917 65273 402 99999 43 99999 41 99999 65494 65293 65694 130 99999 80 99999 18 99999 65948 65695 66200 113 99999 35 99999 10 99999 66472 66201 66743 54 99999 31 99999 11 99999 66995 66744 67245 49 99999 32 99999 16 99999 67525 67246 67804 27 99999 88888 14 88888 20 68075 67805 68345 67 99999 31 99999 57 99999 68619 68346 68892 35 99999 28 99999 24 99999 69161 68893 69429 27 99999 26 99999 88888 20 69704 69430 69978 25 99999 88888 15 88888 21 70248 69979 70517 28 99999 20 99999 88888 20 70791 70518 71063 24 99999 21 99999 88888 21 71327 71064 71589 20 99999 18 99999 88888 18 71862 71590 72133 29 99999 18 99999 88888 20 74063 73800 74326 98 99999 18 99999 34 99999 74599 74327 74870 103 99999 16 99999 30 99999 75132 74871 75392 52 99999 19 99999 24 99999 75661 75393 75929 49 99999 23 99999 88888 20 76187 75930 76443 39 99999 24 99999 59 99999 76712 76444 76980 38 99999 25 99999 88888 20 77191 76981 77400 46 99999 26 99999 88888 29