Draft The Observation_Information class provides information about a science observation. Attributes specific to the InSight Seismometer data products This section contains the simpleTypes that provide more constraints than those at the base data type level. The simpleTypes defined here build on the base data types. This is another component of the common dictionary and therefore falls within the pds namespace. The SEED data products for the SEIS instrument contain data from a single instrument channel. The channel_name identifies which SEIS channel data are included in the SEED file. The instrument_clock_start_count is the value of the instrument clock at the beginning of an observation. The local_mean_solar_time_sol element specifies the number of solar days elapsed since a reference day (e.g. the day on which a landing vehicle set down) for local mean solar time (LMST). Days are measured in rotations of the planet in question from midnight to midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value will be less than or equal to '0'and can be negative. The local_true_solar_time_sol element specifies the number of solar days elapsed since a reference day (e.g. the day on which a landing vehicle set down) for local true solar time (LTST). Days are measured in rotations of the planet in question from midnight to midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value will be less than or equal to '0'and can be negative. Measurement_duration indicates the length of time covered by a given measurement. Measurement_type indicates the seismometer (VBB or SP) and whether the data were collected in continuous or event mode used in a measurement. The mission_phase_name identifies a time period within the mission. The observation_id uniquely identifies an Insight science observation. The product_type identifies a group of data products within a collection that have some property in common, such as processing level, resolution, or instrument-specific setting. Release_number is the number of a scheduled release of InSight data from PDS. The first Insight data release is Release 1. The release_number for a given product is always the first release in which it appears, and does not change if the product is revised later. Sampling_rate specifics the rate (samples/time) that data from an instrument were sampled and recorded. The sequence_id identifies the Insight planning sequence associated with a science product. The sequence_version_id identifies the version of an Insight planning sequence associated with a science product. Software_name identifies the processing software used to generate a data product. Software_version_id identifies the version of the processing software used to generate a data product. Sol_number is the number of the Mars day on which an observation was acquired. Landing day is Sol 0. The spacecraft_clock_count_partition provides the clock partition active for the spacecraft_clock_start_count and spacecraft_clock_stop_count attributes. The spacecraft_clock_start_count is the value of the spacecraft clock at the beginning of an observation. The spacecraft_clock_stop_count is the value of the spacecraft clock at the end of an observation. Start_local_mean_solar_time is the local mean solar time, as defined in the main PDS4 data dictionary, at the beginning of an observation. Start_local_true_solar_time is the local true solar time, as defined in the main PDS4 data dictionary, at the beginning of an observation. Start_sol_number is the number of the Mars day on which a multiple-day observation was begun. Landing day is Sol 0. Start_solar_longitude is the solar longitude, as defined in the main PDS4 data dictionary, at the beginning of an observation. Stop_local_mean_solar_time is the local mean solar time, as defined in the main PDS4 data dictionary, at the end of an observation. Stop_local_true_solar_time is the local true solar time, as defined in the main PDS4 data dictionary, at the end of an observation. Stop_sol_number is the number of the Mars day on which a multiple-day observation was ended. Landing day is Sol 0. Stop_solar_longitude is the solar longitude, as defined in the main PDS4 data dictionary, at the end of an observation.