Not sure what the output of this command means, but I am trying to get the average coverage per bait in a bed file. Thank you

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Code:
coverageBed -hist -abam IonXpress_009_150603.bam -b epilepsy70_medex.bed | grep ^all > output.hist.all.txt
Code:
all 0 188 195018 0.0009640
all 1 148 195018 0.0007589
all 2 175 195018 0.0008974