DBO Historical Pressure Data File Header Info Missing data is -999.0 Mean pressure values are daily averages for the day of year specified Column : Description 1 : Year 2 : Day of Year 3 : DBO Box 1 Mean Pressure Value (mb) 4 : DBO Box 2 Mean Pressure Value (mb) 5 : DBO Box 3 Mean Pressure Value (mb) 6 : DBO Box 4 Mean Pressure Value (mb) 7 : DBO Box 5 Mean Pressure Value (mb) 8 : DBO Box 6 Mean Pressure Value (mb) 9 : DBO Box 7 Mean Pressure Value (mb) 10 : DBO Box 8 Mean Pressure Value (mb) 11 : Number of valid pixels in DBO Box 1 (max = 262) 12 : Number of valid pixels in DBO Box 2 (max = 57) 13 : Number of valid pixels in DBO Box 3 (max = 260) 14 : Number of valid pixels in DBO Box 4 (max = 93) 15 : Number of valid pixels in DBO Box 5 (max = 32) 16 : Number of valid pixels in DBO Box 6 (max = 75) 17 : Number of valid pixels in DBO Box 7 (max = 73) 18 : Number of valid pixels in DBO Box 8 (max = 69)