Given the following information about cows grazing in a field (all terms are GJ/yr/ha):

• Plant production (Pp) = 85 GJ/yr/ha
• Ingestion = 65 GJ/yr/ha
• Assimilation = 35 GJ/yr/ha
• Respiration = 32 GJ/yr/ha
• Egestion = 30 GJ/yr/ha
• Production (Ph) = Assimilation - Respiration

And given these equations:

• Assimilation = Ingestion - Egestion
• Consumption efficiency (CE) = Ih/Pp
• Assimilation efficiency (AE) = Ah/Ih
• Production efficiency (PE) = Ph/Ah
• Trophic efficiency (TE) = Ph/Pp = (CE)(AE)(PE)

What is the trophic efficiency of the cows? Express your answer as a value between 0 and 1 (not a %).