I went and eyeballed the numbers from previous post and put them in standard deviation calculator. I an NOT a mathfag and would please like some checking and interpretation of results. Mean .27, Standard deviation is ..51, 3.7-.27/.51= 6.7 standard deviations. That would be man made. This is NOT notable until someone can proof.
https://www.calculator.net/standard-deviation-calculator.html?numberinputs=-1%2C-.3%2C-.3%2C-.2%2C-.2%2C-.2%2C-.1%2C-.1%2C-.1%2C0%2C0%2C0%2C0%2C.1%2C.1%2C.1%2C.1%2C.1%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.2%2C.3%2C.3%2C.3%2C.3%2C.3%2C.3%2C.3%2C.3%2C.3%2C.4%2C.4%2C.4%2C.4%2C.4%2C.4%2C.5%2C.5%2C.5%2C.5%2C.5%2C.6%2C.6%2C.6%2C.6%2C.7%2C.7%2C.7%2C.8%2C3.7&x=38&y=22
Sample Standard Deviation, s 0.51162868150061
Variance (Sample Standard), s2 0.26176390773406
Population Standard Deviation, σ 0.50779620295747
Variance (Population Standard), σ2 0.25785698373803
Total Numbers, N 67
Sum: 18.6
Mean (Average): 0.27761194029851
Standard Error of the Mean (SEx): 0.062505391735679
Confidence Interval Approximations, If sampling distribution of the mean follows normal distribution
Confidence Level Range
68.3%, SEx 0.21510654856283 - 0.34011733203419
90%, 1.645SEx 0.17479057089332 - 0.3804333097037
95%, 1.960SEx 0.15510137249658 - 0.40012250810044
99%, 2.576SEx 0.1165980511874 - 0.43862582940962
99.9%, 3.291SEx 0.071906696096388 - 0.48331718450063
99.99%, 3.891SEx 0.03440346105498 - 0.52082041954203
99.999%, 4.417SEx 0.0015256250020128 - 0.553698255595
99.9999%, 4.892SEx -0.028164436072435 - 0.58338831666945