Hardie plank siding is a premium brand of cement board siding (also known as fiber cement board siding) produced by the James Hardie Company.ardie plank can be purchased with a wood-grain look, a plain smooth look or a stucco type finish. Hardie plank also comes in simulated cedar shingle planks.
activity duration. Period (hours, days, weeks) required to complete an activity. Activities with zero duration are called milestones.
To calculate average session duration, Analytics sums the duration of each session during the date range you specify and divides that sum by the total number of sessions. For example: Total Session Duration: 1000 minutes (60,000 seconds)