E1: vehicle signal 1.123, treated 1.183, treated 105.4% of vehicle
E2: vehicle signal 0.894, treated 0.891, treated 99.6% of vehicle
E3: vehicle signal 1.183, treated 1.302, treated 110.1% of vehicle
E4: vehicle signal 0.781, treated 0.820, treated 105.0% of vehicle
A. Wells as n (24 treated wells), one-sample t-test against 100%: mean 105.0%, p = 0.00053
B. Wells as n (24 vs 24), Welch t-test on percent of vehicle: difference 5.0 points, p = 0.0036
C. Experiments as n (4), one-sample t-test of percent of vehicle against 100%: mean 105.0% (95% CI 98.2 to 111.8), p = 0.1
D. Experiments as n (4), one-sample t-test of log(treated / vehicle): ratio 1.049 (95% CI 0.983 to 1.120), p = 0.099
E. Experiments as n (4), paired t-test on blank-subtracted signal: difference 0.054, p = 0.13