Table 2. Summary of alpha and beta-diversity results by quarter.

Quarter	Median Shannon index values by room type	p-Value	Median Shannon index values by collection location	p-Value	Adonis R2 values, unweighted UniFrac	p-Values	Adonis R2 values, weighted UniFrac	p-Values
Spring 2015	Lactation room - 0.63 Resident room - 0.63 Restroom - 0.78 Restroom lounge - 0.77 Restroom, unisex - 1.1 Shower room - 0.99	0.091	Chair - 0.72 Door - 0.61 Floor - 0.87 Pump - 0.66 Table - 0.69	0.075	Room type - 0.085 Collection location - 0.071	0.059 0.043	N/A	N/A
Fall 2015	Lactation room - 0.62 Resident room - 0.57 Restroom - 1.1 Restroom lounge - 3.3 Restroom, unisex - 0.68	0.11	Chair - 0.64 Door - 0.62 Floor - 1.4 Pump - 0.62 Table - 0.56	0.14	Room type - 0.13 Collection location - 0.18	0.036 0.002	Room type - 0.59 Collection location - 0.065	0.001 0.11
Winter 2016	Daycare - 2.4 Lactation room - 0.66 Restroom lounge - 1.4 Restroom, unisex - 0.61 Shower room - 0.99	0.0068	Chair - 0.67 Door - 0.77 Floor - 0.99 Pump - 0.89 Table - 0.65 Toy - 1.6	0.90	Room type - 0.16 Collection location - 0.093	0.002 0.55	Room type - N/A Collection location - 0.11	N/A 0.32
Fall 2016	Daycare - 1.0 Lactation room - 0.73 Resident room - 0.73 Restroom lounge - 0.73	0.83	Chair - 0.73 Door - 0.60 Floor - 1.5 Pump - 0.76 Table - 0.70	0.19	Room type - 0.14 Collection location - 0.18	0.009 0.006	Room type - 0.039 Collection location - 0.21	0.042 0.969