| Description: The start_clock_count is the Mission Elapsed Time code at the start of the observation(s), formatted as spacecraft clock ticks and indicating whole and fractional seconds. |
| Namespace Id: nh | Steward: sbn | Class Name: Mission_Elapsed_Time | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: [0-9]{10}:[0-9]{5} |
| Permissible Value(s) | No Values | |