aerosols_mwo_20040705_ro.ict-- Aerosol data for Mount Washington Observatory, zeflor filters exposed for approximately 24 hours, extracted and analyzed by ion chromatography for anions and cations. aerosols_tf_20040705_ro.ict-- Aerosol data for Thompson Farm, zeflor filters exposed for approximately 24 hours, extracted and analyzed by ion chromatography for anions and cations. AETH_TF_20040705_RO.ict--Athelometer data for Thompson Farm. Sampling interval is 5 minutes, 7 channels measured. AMS_TF_20040705_RO.txt--Aerosol Mass Spectrometer data for Thompson Farm. GAS_CS_20040705_RO.ict--gas phase data for Castle Springs. Species measured: CO, O3, NO, NOy, SO2, JNO2_down, JNO2_up. 1 minute data. GAS_IS_20040705_RO.ict--gas phase data for Isle of Shoals (or Appledore Island). Species measured: CO, O3, NO. 1 minute data GAS_MWO_20040705_RO.ict--gas phase data for Mount Washington Observatory. Species measured: CO, O3, NO, NOy, SO2, JNO2_down, JNO2_up. 1 minute data. GAS_PAC_20040705_RO.ict--gas phase data for Pack Monadock. Species measured: CO, NO. 1 minute data. GAS_TF_20040705_RO.ict--gas phase data for Thompson Farm. Species measured: CO, CO2, NO, NOy,O3, SO2,JNO2_down, JNO2_up. 1 minute data HNO3_Sol_NO2_RHB_20040705_RO.ict--HNO3 and Soluable NO2 from the Ron Brown. Some data 4 minute, some 5 minute. MET_CS_20040705_RO.ict--meterology data for Castle Springs. Temperature, relative humidity, wind speed, wind direction, atmospheric pressure. MET_TF_20040705_RO.ict--meterology data for Thompson Farm. Temperature, relative humidity, wind speed, wind direction, atmospheric pressure. METHANE_TF_20040705.ict--Methane data for Thompson Farm. 10 minute data. PART_CS_20040705_RO.ict--particle data for Castle Springs. CNC and scattering data. CNC--1 minute, nephelometer--2 minute PART_MWO_20040705_RO.ict--particle data for Mount Washington Observatory. CNC--1 minute data PART_TF_20040705_RO.ict--particle data for Thompson Farm. CNC and scattering (Optec and Radiance Reasearh) and PSAP. Optec is 2 minute data, all others 1 minute data.