Fig. 2

Study 2 amplifications: average percentage of successful amplifications (blue) out of 12 total replicates (dates 4/18−4/23) and 9 replicates (dates 4/25−5/7). Orange markers are the percentage of successful amplifications for individual samples on a given date, and depict sample-to-sample variability (note: some orange markers are concealed by other blue or orange markers). Due to laboratory complications, one sample (three replicates) is unaccounted for at Mast Landing on 4/25