Dimm Seeing Statistics by Month

     Site        Paranal  
Year 2021
Units arcsecs
Percentiles 5% 10% 15% 20% 25% 50% 75% 90% 95% 97.5% 99% 99.5% mean std N
JAN 0.39 0.44 0.48 0.51 0.55 0.70 0.91 1.15 1.34 1.55 1.84 2.17 0.76 0.31 12309
FEB 0.38 0.42 0.46 0.49 0.52 0.69 0.94 1.30 1.54 1.72 1.94 2.13 0.78 0.36 10527
MAR 0.42 0.47 0.50 0.53 0.56 0.71 0.93 1.25 1.48 1.68 1.95 2.22 0.80 0.34 12729
APR 0.44 0.49 0.53 0.56 0.59 0.75 1.04 1.37 1.63 2.05 2.50 2.71 0.87 0.41 10195
MAY 0.36 0.42 0.46 0.49 0.53 0.69 0.93 1.22 1.49 1.75 2.06 2.23 0.77 0.36 10047
JUN 0.38 0.43 0.47 0.50 0.54 0.70 0.96 1.30 1.57 2.10 2.55 2.73 0.81 0.42 10239
JUL 0.41 0.46 0.50 0.54 0.57 0.71 0.94 1.25 1.49 1.76 2.06 2.23 0.80 0.35 12534
AUG 0.49 0.55 0.60 0.64 0.68 0.96 1.39 1.89 2.19 2.43 2.67 2.79 1.10 0.53 11029
SEP 0.40 0.45 0.48 0.51 0.54 0.70 0.90 1.14 1.35 1.55 1.87 2.08 0.76 0.31 12454
OCT 0.45 0.49 0.53 0.56 0.59 0.76 1.01 1.38 1.66 1.93 2.28 2.47 0.86 0.39 11518
NOV 0.41 0.46 0.50 0.53 0.56 0.69 0.88 1.19 1.51 1.84 2.23 2.55 0.78 0.36 10631
DEC 0.39 0.44 0.48 0.51 0.54 0.69 0.96 1.38 1.67 1.92 2.19 2.40 0.81 0.40 9038
Anual 0.40 0.46 0.50 0.53 0.56 0.72 0.97 1.33 1.61 1.90 2.28 2.51 0.82 0.39 133250