Dimm Seeing Statistics by Month

     Site        Paranal  
Year 2025
Units arcsecs
Percentiles 5% 10% 15% 20% 25% 50% 75% 90% 95% 97.5% 99% 99.5% mean std N
JAN 0.45 0.51 0.54 0.58 0.60 0.75 0.97 1.23 1.39 1.53 1.70 1.82 0.82 0.29 12337
FEB 0.45 0.50 0.54 0.57 0.61 0.79 1.02 1.30 1.52 1.75 2.08 2.29 0.86 0.35 10847
MAR 0.39 0.43 0.47 0.50 0.53 0.67 0.87 1.12 1.31 1.52 1.81 2.04 0.74 0.30 13141
APR 0.32 0.38 0.42 0.46 0.48 0.62 0.81 1.10 1.36 1.60 1.81 1.96 0.69 0.32 11754
MAY 0.32 0.38 0.42 0.45 0.48 0.61 0.77 0.98 1.18 1.43 1.96 2.22 0.66 0.30 13902
JUN 0.35 0.42 0.47 0.51 0.54 0.73 1.06 1.56 1.88 2.06 2.25 2.35 0.87 0.45 10304
JUL 0.36 0.41 0.44 0.47 0.50 0.62 0.83 1.16 1.35 1.52 1.74 1.94 0.71 0.31 13136
AUG 0.43 0.48 0.53 0.57 0.61 0.79 1.04 1.48 1.80 2.06 2.44 2.70 0.90 0.44 9571
SEP 0.39 0.45 0.48 0.51 0.54 0.69 0.93 1.25 1.44 1.65 1.89 2.15 0.78 0.35 11775
OCT 0.40 0.45 0.47 0.50 0.53 0.65 0.86 1.17 1.47 1.85 2.26 2.47 0.76 0.37 13262
NOV 0.39 0.45 0.48 0.51 0.54 0.66 0.88 1.20 1.51 1.82 2.13 2.30 0.76 0.36 11660
DEC 0.47 0.51 0.55 0.58 0.61 0.76 1.00 1.43 1.79 2.10 2.40 2.68 0.88 0.42 10162
Annual 0.38 0.44 0.48 0.51 0.54 0.69 0.91 1.24 1.51 1.80 2.17 2.40 0.78 0.37 142214