Dimm Seeing Statistics by Month

     Site        Paranal  
Year 2023
Units arcsecs
Percentiles 5% 10% 15% 20% 25% 50% 75% 90% 95% 97.5% 99% 99.5% mean std N
JAN 0.45 0.50 0.53 0.55 0.58 0.73 0.96 1.30 1.53 1.74 2.07 2.25 0.82 0.35 11908
FEB 0.43 0.48 0.51 0.53 0.56 0.70 0.88 1.07 1.20 1.37 1.69 2.11 0.75 0.27 8699
MAR 0.48 0.53 0.57 0.61 0.64 0.80 1.01 1.28 1.47 1.69 1.99 2.24 0.86 0.33 11152
APR 0.42 0.46 0.49 0.51 0.54 0.66 0.88 1.33 1.62 1.90 2.30 2.54 0.79 0.39 11721
MAY 0.43 0.48 0.52 0.56 0.60 0.77 1.01 1.32 1.53 1.69 1.89 2.06 0.84 0.34 12485
JUN 0.37 0.43 0.47 0.51 0.54 0.70 0.92 1.24 1.51 1.88 2.34 2.57 0.79 0.38 13349
JUL 0.40 0.45 0.49 0.52 0.55 0.70 0.91 1.19 1.41 1.61 1.86 2.19 0.77 0.33 13160
AUG 0.45 0.50 0.54 0.57 0.60 0.74 0.95 1.18 1.34 1.52 1.72 1.89 0.80 0.29 14321
SEP 0.53 0.58 0.62 0.66 0.69 0.89 1.18 1.62 1.95 2.23 2.50 2.61 1.00 0.44 10233
OCT 0.37 0.42 0.45 0.47 0.50 0.63 0.85 1.14 1.42 1.73 2.14 2.39 0.73 0.35 9205
NOV 0.40 0.45 0.49 0.52 0.54 0.66 0.82 1.03 1.19 1.35 1.57 1.67 0.71 0.25 10567
DEC 0.37 0.42 0.46 0.48 0.51 0.63 0.81 1.05 1.23 1.42 1.73 1.93 0.69 0.28 11367
Annual 0.41 0.46 0.50 0.54 0.57 0.72 0.94 1.24 1.48 1.74 2.14 2.43 0.80 0.36 138382