Figure 8: Monthly Variation in Houston’s a.m. and p.m. Congested Hours due to seasonal Factors,,
Difference in congested hours per day from the trendline,,
,Houston a.m. seasonality,Houston p.m. seasonality
Jan,0.120371534,-0.337053826
Feb,0.186288597,-0.21596855
Mar,0.074762993,0.111950393
Apr,0.341257506,-0.119587216
May,0.008797736,-0.13447194
Jun,-0.121706241,-0.084482429
Jul,-0.603756178,0.299303848
Aug,0.024254885,0.015892458
Sep,0.401949614,0.052441067
Oct,0.270082678,0.078890677
Nov,0.021280074,0.28745362
Dec,-0.723583196,0.045631897
"SOURCE: Calculated from data used in preparation of Federal Highway Administration, Urban Congestion Report, April 2004 – April 2007.",,