Dimm Seeing Statistics by Month

     Site        Paranal  
Year 2019
Units arcsecs
Percentiles 5% 10% 15% 20% 25% 50% 75% 90% 95% 97.5% 99% 99.5% mean std N
JAN 0.42 0.45 0.48 0.51 0.54 0.68 0.90 1.22 1.45 1.79 2.10 2.34 0.77 0.35 11160
FEB 0.41 0.46 0.49 0.52 0.54 0.68 0.93 1.27 1.46 1.60 1.80 1.95 0.78 0.33 9414
MAR 0.39 0.42 0.45 0.48 0.50 0.62 0.82 1.11 1.38 1.59 1.84 1.99 0.71 0.31 13208
APR 0.35 0.40 0.43 0.46 0.49 0.66 0.94 1.46 1.82 2.18 2.59 2.75 0.80 0.47 11791
MAY 0.46 0.51 0.55 0.58 0.62 0.79 1.09 1.50 1.79 2.09 2.36 2.51 0.91 0.42 12435
JUN 0.41 0.47 0.51 0.56 0.60 0.84 1.16 1.53 1.76 2.01 2.36 2.62 0.93 0.44 12319
JUL 0.38 0.43 0.47 0.50 0.53 0.67 0.87 1.16 1.53 1.94 2.33 2.58 0.76 0.38 12280
AUG 0.40 0.46 0.50 0.53 0.56 0.71 1.03 1.46 1.75 2.05 2.39 2.57 0.85 0.44 14270
SEP 0.47 0.54 0.59 0.63 0.67 0.87 1.19 1.70 2.02 2.30 2.55 2.71 1.00 0.48 11452
OCT 0.46 0.52 0.56 0.60 0.63 0.80 1.08 1.47 1.80 2.05 2.30 2.48 0.91 0.41 10598
NOV 0.44 0.48 0.51 0.53 0.55 0.67 0.84 1.04 1.22 1.42 1.75 1.89 0.73 0.26 12002
DEC 0.39 0.43 0.47 0.50 0.53 0.65 0.81 1.01 1.17 1.32 1.53 1.64 0.70 0.24 11848
Anual 0.41 0.46 0.49 0.53 0.56 0.71 0.97 1.35 1.65 1.93 2.28 2.49 0.81 0.40 142777