Weather observations for the past three days for
Mena, Mena Intermountain Municipal Airport
Metric (Imperial)
Date Time (cdt) Wind (kph) Vis. (km) Weather Sky Cond. Temperature (ºC) Relative Humidity Wind Chill (°C) Heat Index (°C) Pressure Precipitation (cm)
Air Dwpt 6 hour altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
14 05:55 Calm 9.66 Light Rain Fog/Mist SCT025 BKN034 21.7 21.2 97% 76.33 0.0 1.22
14 05:35 Calm 2.41 Heavy Rain Fog/Mist OVC026 21.5 21.3 99% 76.33 0.0 1.19
14 05:15 Calm 1.61 Heavy Rain Fog/Mist FEW009 SCT017 OVC024 21.7 21.4 98% 76.33 0.0 0.46
14 04:55 Vrbl 6 16.09 Overcast BKN007 OVC011 21.9 21.3 96% 76.3 0.0
14 04:35 Calm 14.48 Overcast OVC007 21.8 21.3 97% 76.3 0.0
14 04:15 Vrbl 6 16.09 Overcast OVC007 21.8 21.1 96% 76.3 0.0
14 03:55 Calm 16.09 Mostly Cloudy BKN008 21.7 21.2 97% 76.28 0.0
14 03:35 Calm 16.09 Mostly Cloudy BKN009 21.6 21.1 97% 76.28 0.0
14 03:15 Calm 8.05 Fog/Mist OVC005 21.5 21.2 98% 76.3 0.0
14 02:55 Vrbl 6 14.48 Overcast OVC004 21.5 21.1 98% 76.3 0.0
14 02:35 Calm 16.09 Overcast OVC005 21.6 21 96% 76.3 0.0
14 02:15 Vrbl 6 16.09 Overcast OVC006 21.7 20.9 95% 76.3 0.0
14 01:55 SW 6 16.09 Overcast OVC008 22 20.8 93% 76.3 0.0
14 01:35 Calm 16.09 Overcast OVC009 22.2 20.7 91% 76.3 0.0
14 01:15 Calm 16.09 Overcast OVC011 22.2 20.5 90% 76.3 0.0
14 00:55 Calm 16.09 Partly Cloudy SCT012 SCT160 22 20.8 26.5 22 93% 76.3 0.0
14 00:35 Calm 16.09 A Few Clouds FEW160 22.1 20.8 92% 76.3 0.0
14 00:15 Calm 16.09 A Few Clouds FEW013 22.5 21.1 92% 76.3 0.0
13 23:55 Calm 16.09 Overcast OVC013 22.7 21 90% 76.3 0.0
13 23:35 Calm 16.09 Mostly Cloudy BKN014 BKN055 BKN095 22.5 21.1 92% 76.3 0.0
13 23:15 Calm 16.09 Partly Cloudy FEW075 SCT095 22.6 21.1 91% 76.33 0.0
13 22:55 Calm 16.09 Fair CLR 22.6 20.9 90% 76.33 0.0
13 22:35 Calm 16.09 Partly Cloudy SCT060 22.8 20.7 88% 76.33 0.0
13 22:15 Calm 16.09 Mostly Cloudy BKN060 23 21.1 89% 76.3 0.0
13 21:55 Calm 16.09 A Few Clouds FEW060 23 21.3 90% 76.28 0.0
13 21:35 Vrbl 6 16.09 Partly Cloudy SCT060 23.2 21.5 90% 76.28 0.0
13 21:15 Vrbl 6 16.09 Light Rain FEW090 23.1 21.3 90% 76.23 0.0
13 20:55 Vrbl 7 12.87 Light Rain CLR 23.5 21.2 87% 76.28 0.0
13 20:35 Vrbl 7 11.27 Light Rain FEW120 24.1 21.2 84% 24 76.28 0.0
13 20:15 Vrbl 7 16.09 A Few Clouds FEW033 25.1 21.9 82% 26 76.25 0.0
13 19:55 Calm 16.09 Thunderstorm in Vicinity SCT035 25.2 23.7 91% 26 76.23 0.0
13 19:35 Calm 14.48 A Few Clouds FEW080 25.6 24.1 91% 27 76.23 0.0
13 19:15 Calm 14.48 A Few Clouds FEW080 26.1 24.1 89% 28 76.23 0.0
13 18:55 Calm 16.09 Fair CLR 26.7 24.1 29.8 26.1 86% 30 76.17 0.0 0.03
13 18:35 Calm 12.87 Light Rain CLR 26.8 23.7 83% 30 76.17 0.0
13 18:15 SW 6 14.48 Light Rain CLR 27.3 22.7 76% 30 76.15 0.0
13 17:55 W 7 16.09 Fair CLR 28.3 21.8 68% 31 76.17 0.0
13 17:35 W 7 16.09 A Few Clouds FEW050 28.5 21.9 68% 31 76.17 0.0
13 17:15 Calm 16.09 A Few Clouds FEW050 29 21.7 65% 32 76.17 0.0
13 16:55 W 9 16.09 A Few Clouds FEW033 29 21.8 65% 32 76.2 0.0
13 16:35 W 17 16.09 Partly Cloudy SCT033 29.7 21.9 63% 33 76.2 0.0
13 16:15 W 15 16.09 Fair CLR 29.6 22.1 64% 33 76.2 0.0
13 15:55 W 13 16.09 A Few Clouds FEW030 28.9 22 66% 32 76.2 0.0 0.03
13 15:35 W 19 16.09 A Few Clouds FEW030 29 21.7 65% 32 76.23 0.0
13 15:15 W 15 16.09 Partly Cloudy FEW065 SCT330 28.4 22.2 69% 31 76.25 0.0
13 14:55 W 11 16.09 Mostly Cloudy FEW030 SCT060 BKN300 BKN360 28.2 22 69% 31 76.3 0.0 0.03
13 14:35 W 13 16.09 Mostly Cloudy SCT027 SCT055 BKN300 BKN360 28.5 22.3 69% 32 76.3 0.0 0.03
13 14:15 W 11 16.09 Mostly Cloudy SCT024 BKN320 BKN340 28.1 23 74% 31 76.3 0.0
13 13:55 W 13 16.09 Partly Cloudy FEW022 SCT031 SCT300 SCT350 27.9 22.7 73% 31 76.33 0.0
13 13:35 W 9 16.09 Partly Cloudy FEW020 SCT028 SCT038 SCT350 27 22.6 77% 29 76.33 0.0
13 13:15 Calm 16.09 Mostly Cloudy BKN019 BKN024 26.7 22.9 80% 29 76.33 0.0
13 12:55 Vrbl 6 16.09 Mostly Cloudy SCT014 BKN021 BKN240 26.4 23.4 26.4 21.2 84% 29 76.35 0.0 0.23
13 12:35 Vrbl 6 11.27 Mostly Cloudy BKN020 BKN380 24.9 23 89% 25 76.35 0.0
13 12:15 Vrbl 7 14.48 Overcast BKN019 OVC025 25.3 22.4 84% 26 76.38 0.0
13 10:55 Calm 16.09 A Few Clouds FEW016 24.7 22.1 86% 25 76.38 0.0
13 10:35 Calm 16.09 Partly Cloudy FEW017 SCT320 SCT370 24.7 22.4 87% 25 76.4 0.0
13 10:15 W 6 16.09 A Few Clouds FEW330 23.8 21.8 89% 76.38 0.0
13 09:55 Calm 16.09 Fair CLR 22.6 21.3 92% 76.38 0.0 0.23
13 09:35 Calm 16.09 A Few Clouds FEW095 22 20.8 93% 76.4 0.0
13 09:15 Calm 16.09 Fair CLR 21.6 20.7 95% 76.4 0.0
13 08:55 W 7 3.22 Light Rain Fog/Mist BKN025 21.4 20.7 96% 76.4 0.0 0.23
13 08:35 W 20 G 39 3.22 Rain Fog/Mist BKN017 21.5 20.8 96% 76.43 0.0 0.05
13 08:15 Vrbl 6 14.48 Partly Cloudy SCT015 SCT022 22.8 21.7 94% 76.33 0.0
13 07:55 Calm 12.87 A Few Clouds FEW016 22.3 21.3 94% 76.3 0.0
13 07:35 Calm 14.48 A Few Clouds FEW015 22.2 21.2 94% 76.3 0.0
13 07:15 Calm 14.48 A Few Clouds FEW023 21.4 20.8 96% 76.3 0.0
13 06:55 Calm 14.48 Partly Cloudy SCT019 21.1 20.5 22 20.4 96% 76.28 0.0 0.03
13 06:35 Calm 14.48 Overcast BKN019 OVC026 20.9 20.7 99% 76.28 0.0
13 06:15 Calm 12.87 Mostly Cloudy BKN019 20.8 20.8 100% 76.25 0.0
13 05:55 Calm 14.48 A Few Clouds FEW130 20.4 20.3 99% 76.25 0.0 0.03
13 05:35 Calm 16.09 Partly Cloudy SCT035 20.7 20.3 98% 76.25 0.0 0.03
13 05:15 Calm 16.09 Mostly Cloudy SCT033 SCT044 BKN080 20.9 20.4 97% 76.28 0.0 0.03
13 04:55 Calm 14.48 Partly Cloudy FEW050 SCT080 21.3 20.2 93% 76.25 0.0
13 04:35 Calm 16.09 Mostly Cloudy BKN080 20.9 20.6 98% 76.28 0.0
13 04:15 Calm 16.09 Mostly Cloudy BKN075 21.2 20.6 96% 76.28 0.0
13 03:55 Calm 16.09 A Few Clouds FEW047 21.5 20.2 92% 76.25 0.0
13 03:35 Calm 16.09 Partly Cloudy SCT047 21.5 20.4 93% 76.28 0.0
13 03:15 Calm 16.09 Mostly Cloudy SCT014 BKN021 BKN047 21.6 20.4 93% 76.28 0.0
13 02:55 Vrbl 6 16.09 Overcast BKN012 OVC020 21.8 20.7 94% 76.3 0.0
13 02:35 Calm 16.09 Mostly Cloudy BKN012 BKN020 BKN065 21.6 20.9 96% 76.3 0.0
13 02:15 Vrbl 6 16.09 Partly Cloudy SCT014 SCT065 21.9 20.7 93% 76.25 0.0
13 01:55 Vrbl 6 16.09 A Few Clouds FEW012 22 20.7 92% 76.25 0.0
13 01:35 Vrbl 7 16.09 Partly Cloudy SCT012 21.8 20.9 95% 76.23 0.0
13 01:15 SE 6 16.09 Partly Cloudy SCT012 21.6 21 96% 76.23 0.0
13 00:55 E 7 16.09 Fair CLR 21.5 21.2 25.8 20.7 98% 76.2 0.0 1.27
13 00:35 E 9 16.09 Fair CLR 21.4 21 98% 76.23 0.0
13 00:15 SE 7 16.09 Fair CLR 21.4 21.1 98% 76.23 0.0
12 23:55 Calm 16.09 Fair CLR 21.2 21.1 99% 76.28 0.0
12 23:35 Calm 16.09 A Few Clouds FEW150 21.2 21 99% 76.3 0.0
12 23:15 Calm 16.09 A Few Clouds FEW008 21.3 21 98% 76.3 0.0
12 22:55 W 15 16.09 Partly Cloudy SCT007 21.5 21.1 98% 76.33 0.0 0.03
12 22:35 W 17 16.09 A Few Clouds FEW005 21.9 21.4 97% 76.3 0.0 0.03
12 22:15 W 6 12.87 Light Rain FEW100 22.7 21.9 95% 76.3 0.0
12 21:55 W 6 16.09 A Few Clouds FEW035 22.7 21.8 95% 76.28 0.0 0.18 1.24
12 21:35 Calm 4.83 Light Rain Fog/Mist FEW035 22.9 21.8 94% 76.28 0.0 0.18
12 20:55 Calm 4.83 Thunderstorm Light Rain Fog/Mist BKN042 20.7 19.9 95% 76.28 0.0 1.07
12 20:35 Vrbl 9 3.22 Thunderstorm Rain Fog/Mist BKN041 21.4 19.7 90% 76.28 0.0 0.69
12 20:15 SW 9 9.66 Light Rain Fog/Mist Thunderstorm in Vicinity FEW018 SCT039 22.6 20.5 88% 76.25 0.0 0.05
12 19:55 Calm 14.48 Thunderstorm in Vicinity CLR 25.5 22.6 84% 27 76.23 0.0
12 19:35 Calm 12.87 Light Rain FEW085 25.5 22.5 84% 27 76.2 0.0
12 19:15 Calm 16.09 Thunderstorm in Vicinity FEW090 25.6 22.3 82% 27 76.15 0.0
12 18:55 Vrbl 6 16.09 Fair CLR 26 21.9 31.8 25.4 78% 28 76.15 0.0 0.25
12 18:35 Vrbl 9 16.09 Fair CLR 27.1 22.7 77% 30 76.12 0.0
12 18:15 Vrbl 7 16.09 A Few Clouds FEW090 28.4 23.2 73% 32 76.12 0.0
12 17:55 Calm 16.09 Fair CLR 29 24.3 76% 34 76.17 0.0
12 17:35 Calm 16.09 Fair CLR 28 24.7 82% 32 76.15 0.0
12 17:15 Calm 14.48 Thunderstorm in Vicinity FEW035 26.3 23.1 83% 28 76.15 0.0
12 16:55 SE 9 14.48 Light Rain SCT034 26.5 23.5 84% 29 76.15 0.0 0.18
12 16:35 Calm 11.27 Partly Cloudy SCT034 27.3 24.2 83% 31 76.15 0.0 0.18
12 16:15 Calm 16.09 Fair CLR 30.3 23.7 68% 35 76.15 0.0
12 15:55 Vrbl 6 16.09 A Few Clouds FEW038 31.6 22.6 59% 36 76.15 0.0 0.08
12 15:35 W 11 16.09 Fair CLR 31.4 22.4 59% 35 76.15 0.0
12 15:15 Vrbl 6 16.09 A Few Clouds FEW046 29.6 22.8 67% 33 76.17 0.0
12 14:55 Calm 16.09 Partly Cloudy FEW034 SCT340 29.9 23.1 67% 34 76.2 0.0
12 14:35 Vrbl 6 16.09 Partly Cloudy FEW037 SCT360 30.1 22.7 65% 34 76.2 0.0
12 14:15 NW 7 16.09 Mostly Cloudy SCT036 BKN360 29 22.9 70% 33 76.25 0.0
12 13:55 Calm 16.09 Mostly Cloudy BKN032 28.3 23.2 74% 32 76.28 0.0 0.08
12 13:35 Calm 16.09 Mostly Cloudy SCT030 BKN035 27.8 23.7 78% 31 76.3 0.0 0.08
12 13:15 Calm 12.87 A Few Clouds FEW034 27 24.3 85% 30 76.35 0.0 0.08
12 12:55 Calm 16.09 A Few Clouds FEW330 28.8 22.6 30 23.4 69% 32 76.35 0.0
12 12:35 W 7 16.09 A Few Clouds FEW032 29.1 22.1 66% 32 76.38 0.0
12 12:15 W 13 16.09 A Few Clouds FEW330 28.9 21.4 64% 31 76.38 0.0
12 11:55 Vrbl 9 16.09 A Few Clouds FEW034 29.2 22.3 66% 32 76.4 0.0
12 11:35 W 11 16.09 A Few Clouds FEW027 28.3 22 69% 31 76.4 0.0
12 11:15 W 9 16.09 Partly Cloudy SCT025 SCT310 27.5 22.1 72% 30 76.4 0.0
12 10:55 W 17 16.09 A Few Clouds FEW025 28 22.2 71% 31 76.38 0.0
12 10:35 W 13 16.09 Partly Cloudy SCT021 27.4 22.2 73% 30 76.4 0.0
12 10:15 W 15 16.09 A Few Clouds FEW020 27.5 22.2 73% 30 76.4 0.0
12 09:35 W 7 16.09 Mostly Cloudy BKN013 BKN020 25.1 22.8 87% 26 76.43 0.0
12 09:15 W 11 16.09 Mostly Cloudy BKN012 BKN020 24.6 22.6 89% 25 76.43 0.0
12 08:55 W 9 16.09 Overcast BKN013 OVC021 24.5 22.4 88% 25 76.43 0.0
12 08:35 W 7 16.09 Mostly Cloudy BKN013 BKN020 24.6 22.4 88% 25 76.43 0.0
12 08:15 Vrbl 11 16.09 Mostly Cloudy BKN010 BKN019 24.6 22.5 88% 25 76.38 0.0
12 07:55 SW 9 16.09 Overcast OVC009 23.8 22.2 91% 76.38 0.0
12 07:35 SW 11 16.09 Overcast OVC008 23.5 22.1 92% 76.33 0.0
12 07:15 SW 9 16.09 Overcast OVC008 23.4 22 92% 76.33 0.0
12 06:55 W 9 16.09 Overcast OVC009 23.4 21.9 24.7 23.3 91% 76.33 0.0
12 06:35 Vrbl 9 16.09 Overcast OVC011 23.5 21.8 90% 76.33 0.0
12 06:15 W 7 16.09 Overcast OVC012 23.5 21.6 89% 76.3 0.0
12 05:55 W 11 16.09 Partly Cloudy SCT014 23.4 21.3 88% 76.3 0.0
12 05:35 Vrbl 6 16.09 A Few Clouds FEW016 23.4 21.3 88% 76.3 0.0
12 05:15 Vrbl 9 16.09 Fair CLR 23.5 21.2 87% 76.28 0.0
12 04:55 Vrbl 7 16.09 Fair CLR 23.6 21.1 86% 76.28 0.0
12 04:35 Vrbl 9 16.09 Fair CLR 23.5 21 86% 76.28 0.0
12 04:15 Vrbl 7 16.09 Fair CLR 23.7 21 85% 76.28 0.0
12 03:55 Vrbl 9 16.09 Fair CLR 23.9 21 84% 24 76.25 0.0
12 03:35 SW 9 16.09 Fair CLR 24 20.9 83% 24 76.25 0.0
12 03:15 Vrbl 9 16.09 Fair CLR 24.2 20.9 82% 25 76.25 0.0
12 02:55 Vrbl 7 16.09 Fair CLR 24.4 20.7 80% 25 76.25 0.0
12 02:35 Vrbl 9 16.09 Fair CLR 24.6 20.5 78% 25 76.25 0.0
12 02:15 Vrbl 7 16.09 Fair CLR 24.6 19.9 75% 25 76.25 0.0
12 01:55 Vrbl 6 16.09 Fair CLR 24.5 19.8 75% 25 76.25 0.0
12 01:35 Vrbl 6 16.09 Fair CLR 24.4 19.8 76% 25 76.25 0.0
12 01:15 Calm 16.09 Fair CLR 24.5 19.8 75% 25 76.25 0.0
12 00:55 Vrbl 11 16.09 Fair CLR 25 20.1 30.1 25 74% 26 76.25 0.0
12 00:35 Vrbl 7 16.09 Fair CLR 25.1 20.4 75% 26 76.2 0.0
12 00:15 Vrbl 7 16.09 Fair CLR 25.5 20.7 75% 27 76.23 0.0
11 23:55 Calm 16.09 Fair CLR 26 20.5 72% 27 76.2 0.0
11 23:35 Vrbl 7 16.09 Fair CLR 26.2 20.7 72% 28 76.17 0.0
11 23:15 Vrbl 7 16.09 Fair CLR 26.6 21.1 72% 28 76.17 0.0
11 22:55 Vrbl 6 16.09 Fair CLR 27 21.9 74% 29 76.17 0.0
11 22:35 Vrbl 6 16.09 Fair CLR 27.2 21.7 72% 29 76.17 0.0
11 22:15 Calm 16.09 Fair CLR 27.5 21.6 70% 30 76.17 0.0
11 21:55 Calm 16.09 Fair CLR 27.4 21.7 71% 30 76.15 0.0
11 21:35 Calm 16.09 Fair CLR 27.3 21.8 72% 30 76.15 0.0
11 21:15 Calm 16.09 Fair CLR 27 21.8 73% 29 76.15 0.0
11 20:55 Calm 16.09 Fair CLR 26.6 22 76% 29 76.15 0.0
11 20:35 Calm 14.48 Fair CLR 27 22 74% 29 76.15 0.0
11 20:15 Vrbl 6 16.09 Fair CLR 28.3 21.6 67% 31 76.12 0.0
11 19:55 Calm 16.09 Fair CLR 29 21.7 65% 32 76.12 0.0
11 19:35 Vrbl 7 16.09 Fair CLR 29.5 21.8 63% 33 76.12 0.0
11 19:15 Vrbl 6 16.09 Fair CLR 29.9 21.9 62% 33 76.12 0.0
11 18:55 Vrbl 6 16.09 Fair CLR 30.4 21.7 32.2 30.3 60% 34 76.12 0.0
11 18:35 Vrbl 6 16.09 Fair CLR 30.6 21.7 59% 34 76.12 0.0
11 18:15 Vrbl 6 16.09 Fair CLR 31.1 21.8 58% 34 76.1 0.0
11 17:55 Vrbl 6 16.09 Fair CLR 30.5 21.8 60% 34 76.1 0.0
11 17:35 Vrbl 7 16.09 Fair CLR 30.4 21.4 59% 33 76.1 0.0
11 17:15 Vrbl 7 16.09 Fair CLR 32 21.5 54% 35 76.1 0.0
11 16:55 SW 9 16.09 Fair CLR 32 21 52% 35 76.1 0.0
11 16:35 Vrbl 9 16.09 Fair CLR 31.8 21.6 55% 35 76.1 0.0
11 16:15 SW 13 14.48 Fair CLR 31.6 21.4 55% 35 76.1 0.0
11 15:55 Vrbl 7 16.09 A Few Clouds FEW370 32 20.6 51% 35 76.12 0.0
11 15:35 Vrbl 7 14.48 Fair CLR 32 21.1 52% 35 76.15 0.0
11 15:15 Vrbl 9 14.48 A Few Clouds FEW330 31.5 20.9 53% 34 76.15 0.0
11 14:55 Vrbl 11 14.48 A Few Clouds FEW330 31.4 21.6 56% 35 76.15 0.0
11 14:35 Vrbl 7 16.09 Fair CLR 31.5 21.8 56% 35 76.17 0.0
11 14:15 Vrbl 11 16.09 Fair CLR 31.4 21.6 56% 35 76.17 0.0
11 13:55 Vrbl 7 16.09 Fair CLR 31.4 22.2 58% 35 76.2 0.0
11 13:35 Vrbl 9 16.09 A Few Clouds FEW340 31.2 21.4 56% 34 76.2 0.0
11 13:15 Vrbl 9 16.09 Partly Cloudy FEW260 SCT360 31.3 21.4 56% 34 76.23 0.0
11 12:55 Vrbl 7 16.09 A Few Clouds FEW360 31 21.2 31 24.8 56% 34 76.23 0.0
11 12:35 Vrbl 9 16.09 A Few Clouds FEW370 30.6 20.8 56% 33 76.25 0.0
11 12:15 Vrbl 7 16.09 A Few Clouds FEW360 30.4 20.8 57% 33 76.25 0.0
11 11:35 Vrbl 9 16.09 A Few Clouds FEW370 29.9 21.1 59% 32 76.28 0.0
11 09:55 Vrbl 11 16.09 Fair CLR 27.8 22 71% 30 76.28 0.0
11 09:35 Vrbl 7 16.09 Fair CLR 27.6 22.3 73% 30 76.28 0.0
11 09:15 W 15 16.09 Fair CLR 27.2 22.2 74% 30 76.28 0.0
11 08:55 W 13 16.09 Fair CLR 26.7 22.1 76% 29 76.25 0.0
11 08:35 Vrbl 7 16.09 Fair CLR 26.2 22.4 80% 28 76.28 0.0
11 08:15 Vrbl 11 16.09 Fair CLR 25.8 22.3 81% 27 76.25 0.0
11 07:55 W 9 16.09 Fair CLR 25.5 22.2 82% 27 76.25 0.0
11 07:35 W 13 16.09 Fair CLR 25.3 22 82% 26 76.23 0.0
11 07:15 Vrbl 6 16.09 Fair CLR 24.9 21.9 83% 26 76.2 0.0
11 06:55 W 11 16.09 Fair CLR 24.7 21.8 26.5 24.1 84% 25 76.2 0.0
11 06:35 W 9 14.48 Fair CLR 24.5 21.8 85% 25 76.2 0.0
11 06:15 Vrbl 7 14.48 Fair CLR 24.6 21.8 84% 25 76.17 0.0
Date Time (cdt) Wind (kph) Vis. (km) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°C) Heat Index (°C) altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºC) Pressure Precipitation (cm)