The following codes are used to represent daily periods of time:
TOT - Total breakdown by full day
OVN - Overnight / 12 midnight - 6:00 AM
AMD - AM (morning) Drive / 6:00 AM - 10:00 AM
MID - Midday / 10:00 AM - 3:00 PM
PMD - PM (afternoon) Drive / 3:00 PM - 7:00 PM
EVE - Evening / 7:00 PM - 12:00 midnight