Aviation Digital Data Service (ADDS)

Output produced by METARs form (1910 UTC 18 April 2019)
found at http://www.aviationweather.gov/metar/data/
 
METAR text: VTUK 181900Z 22004KT 180V250 8000 NSC 28/22 Q1005 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1900 UTC 18 April 2019
Temperature: 28.0°C (82°F)
Dewpoint: 22.0°C (72°F) [RH = 70%]
Pressure (altimeter): 29.68 inches Hg (1005.0 mb)
Winds: from the SW (220 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 5 miles ( 8 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181800Z 20003KT 170V230 8000 NSC 28/22 Q1006 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1800 UTC 18 April 2019
Temperature: 28.0°C (82°F)
Dewpoint: 22.0°C (72°F) [RH = 70%]
Pressure (altimeter): 29.70 inches Hg (1006.0 mb)
Winds: from the SSW (200 degrees) at 3 MPH (3 knots; 1.5 m/s)
Visibility: 5 miles ( 8 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181700Z 22004KT 9000 NSC 29/22 Q1007 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1700 UTC 18 April 2019
Temperature: 29.0°C (84°F)
Dewpoint: 22.0°C (72°F) [RH = 66%]
Pressure (altimeter): 29.73 inches Hg (1007.0 mb)
Winds: from the SW (220 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181600Z 27004KT 9000 NSC 31/22 Q1008 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1600 UTC 18 April 2019
Temperature: 31.0°C (88°F)
Dewpoint: 22.0°C (72°F) [RH = 59%]
Pressure (altimeter): 29.76 inches Hg (1008.0 mb)
Winds: from the W (270 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181500Z 19004KT 140V240 9000 NSC 30/22 Q1008 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1500 UTC 18 April 2019
Temperature: 30.0°C (86°F)
Dewpoint: 22.0°C (72°F) [RH = 62%]
Pressure (altimeter): 29.76 inches Hg (1008.0 mb)
Winds: from the S (190 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181400Z 19004KT 140V230 9000 NSC 31/22 Q1007 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1400 UTC 18 April 2019
Temperature: 31.0°C (88°F)
Dewpoint: 22.0°C (72°F) [RH = 59%]
Pressure (altimeter): 29.73 inches Hg (1007.0 mb)
Winds: from the S (190 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181300Z 32003KT 280V360 9000 NSC 32/22 Q1006 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1300 UTC 18 April 2019
Temperature: 32.0°C (90°F)
Dewpoint: 22.0°C (72°F) [RH = 56%]
Pressure (altimeter): 29.70 inches Hg (1006.0 mb)
Winds: from the NW (320 degrees) at 3 MPH (3 knots; 1.5 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181200Z 27005KT 250V310 9000 FEW030 SCT100 34/22 Q1006 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1200 UTC 18 April 2019
Temperature: 34.0°C (93°F)
Dewpoint: 22.0°C (72°F) [RH = 50%]
Pressure (altimeter): 29.70 inches Hg (1006.0 mb)
Winds: from the W (270 degrees) at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
scattered clouds at 10000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181100Z 20002KT 9000 FEW030 SCT100 34/21 Q1005 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1100 UTC 18 April 2019
Temperature: 34.0°C (93°F)
Dewpoint: 21.0°C (70°F) [RH = 47%]
Pressure (altimeter): 29.68 inches Hg (1005.0 mb)
Winds: from the SSW (200 degrees) at 2 MPH (2 knots; 1.0 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
scattered clouds at 10000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 181000Z 18003KT 140V230 9000 SCT030 36/21 Q1004 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1000 UTC 18 April 2019
Temperature: 36.0°C (97°F)
Dewpoint: 21.0°C (70°F) [RH = 42%]
Pressure (altimeter): 29.65 inches Hg (1004.0 mb)
Winds: from the S (180 degrees) at 3 MPH (3 knots; 1.5 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180900Z VRB04KT 9999 SCT030 40/22 Q1004 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0900 UTC 18 April 2019
Temperature: 40.0°C (104°F)
Dewpoint: 22.0°C (72°F) [RH = 36%]
Pressure (altimeter): 29.65 inches Hg (1004.0 mb)
Winds: variable direction winds at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180800Z 20005KT 150V270 9999 FEW030 40/23 Q1005 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0800 UTC 18 April 2019
Temperature: 40.0°C (104°F)
Dewpoint: 23.0°C (73°F) [RH = 38%]
Pressure (altimeter): 29.68 inches Hg (1005.0 mb)
Winds: from the SSW (200 degrees) at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180700Z VRB06KT 9000 FEW030 39/23 Q1006 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0700 UTC 18 April 2019
Temperature: 39.0°C (102°F)
Dewpoint: 23.0°C (73°F) [RH = 40%]
Pressure (altimeter): 29.70 inches Hg (1006.0 mb)
Winds: variable direction winds at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180600Z VRB05KT 9000 FEW030 39/24 Q1008 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0600 UTC 18 April 2019
Temperature: 39.0°C (102°F)
Dewpoint: 24.0°C (75°F) [RH = 43%]
Pressure (altimeter): 29.76 inches Hg (1008.0 mb)
Winds: variable direction winds at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180500Z VRB05KT 9000 NSC 38/23 Q1009 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0500 UTC 18 April 2019
Temperature: 38.0°C (100°F)
Dewpoint: 23.0°C (73°F) [RH = 42%]
Pressure (altimeter): 29.79 inches Hg (1009.0 mb)
Winds: variable direction winds at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180400Z VRB03KT 9000 NSC 36/23 Q1010 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0400 UTC 18 April 2019
Temperature: 36.0°C (97°F)
Dewpoint: 23.0°C (73°F) [RH = 47%]
Pressure (altimeter): 29.82 inches Hg (1010.0 mb)
Winds: variable direction winds at 3 MPH (3 knots; 1.5 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180300Z VRB03KT 9000 NSC 34/22 Q1010 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0300 UTC 18 April 2019
Temperature: 34.0°C (93°F)
Dewpoint: 22.0°C (72°F) [RH = 50%]
Pressure (altimeter): 29.82 inches Hg (1010.0 mb)
Winds: variable direction winds at 3 MPH (3 knots; 1.5 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180200Z VRB04KT 9000 NSC 33/21 Q1010 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0200 UTC 18 April 2019
Temperature: 33.0°C (91°F)
Dewpoint: 21.0°C (70°F) [RH = 49%]
Pressure (altimeter): 29.82 inches Hg (1010.0 mb)
Winds: variable direction winds at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180100Z VRB02KT9000 FEW035 31/22 Q1010 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0100 UTC 18 April 2019
Temperature: 31.0°C (88°F)
Dewpoint: 22.0°C (72°F) [RH = 59%]
Pressure (altimeter): 29.82 inches Hg (1010.0 mb)
Winds: missing
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3500 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 180000Z VRB02KT 9000 FEW035 27/22 Q1009 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0000 UTC 18 April 2019
Temperature: 27.0°C (81°F)
Dewpoint: 22.0°C (72°F) [RH = 74%]
Pressure (altimeter): 29.79 inches Hg (1009.0 mb)
Winds: variable direction winds at 2 MPH (2 knots; 1.0 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3500 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 172300Z 33004KT 9000 SCT035 BKN100 25/21 Q1009 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 2300 UTC 17 April 2019
Temperature: 25.0°C (77°F)
Dewpoint: 21.0°C (70°F) [RH = 79%]
Pressure (altimeter): 29.79 inches Hg (1009.0 mb)
Winds: from the NNW (330 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: 10000 feet AGL
Clouds: scattered clouds at 3500 feet AGL
broken clouds at 10000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 172200Z VRB02KT 8000 NSC 26/21 Q1008 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 2200 UTC 17 April 2019
Temperature: 26.0°C (79°F)
Dewpoint: 21.0°C (70°F) [RH = 74%]
Pressure (altimeter): 29.76 inches Hg (1008.0 mb)
Winds: variable direction winds at 2 MPH (2 knots; 1.0 m/s)
Visibility: 5 miles ( 8 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 172100Z 15003KT 120V200 9000 NSC 26/21 Q1007 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 2100 UTC 17 April 2019
Temperature: 26.0°C (79°F)
Dewpoint: 21.0°C (70°F) [RH = 74%]
Pressure (altimeter): 29.73 inches Hg (1007.0 mb)
Winds: from the SSE (150 degrees) at 3 MPH (3 knots; 1.5 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 172000Z 35003KT 9000 NSC 27/21 Q1007 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 2000 UTC 17 April 2019
Temperature: 27.0°C (81°F)
Dewpoint: 21.0°C (70°F) [RH = 70%]
Pressure (altimeter): 29.73 inches Hg (1007.0 mb)
Winds: from the N (350 degrees) at 3 MPH (3 knots; 1.5 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 171900Z VRB05KT 9000 FEW025 BKN100 28/20 Q1007 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1900 UTC 17 April 2019
Temperature: 28.0°C (82°F)
Dewpoint: 20.0°C (68°F) [RH = 62%]
Pressure (altimeter): 29.73 inches Hg (1007.0 mb)
Winds: variable direction winds at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: 10000 feet AGL
Clouds: few clouds at 2500 feet AGL
broken clouds at 10000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 171800Z 29009KT 250V320 9000 SCT020 BKN100 28/20 Q1008 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1800 UTC 17 April 2019
Temperature: 28.0°C (82°F)
Dewpoint: 20.0°C (68°F) [RH = 62%]
Pressure (altimeter): 29.76 inches Hg (1008.0 mb)
Winds: from the WNW (290 degrees) at 10 MPH (9 knots; 4.6 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: 10000 feet AGL
Clouds: scattered clouds at 2000 feet AGL
broken clouds at 10000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 171700Z 23010KT 200V280 9000 TS FEW018CB SCT020 BKN080 28/20 Q1008 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1700 UTC 17 April 2019
Temperature: 28.0°C (82°F)
Dewpoint: 20.0°C (68°F) [RH = 62%]
Pressure (altimeter): 29.76 inches Hg (1008.0 mb)
Winds: from the SW (230 degrees) at 12 MPH (10 knots; 5.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: 8000 feet AGL
Clouds: few clouds at 1800 feet AGL
scattered clouds at 2000 feet AGL
broken clouds at 8000 feet AGL
Weather: TS  (thunderstorm)

METAR text: VTUK 171600Z 24008KT 160V290 9000 -TSRA FEW018CB SCT020 BKN080 27/20 Q1010 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1600 UTC 17 April 2019
Temperature: 27.0°C (81°F)
Dewpoint: 20.0°C (68°F) [RH = 66%]
Pressure (altimeter): 29.82 inches Hg (1010.0 mb)
Winds: from the WSW (240 degrees) at 9 MPH (8 knots; 4.1 m/s)
Visibility: 6 miles ( 9 km)
Ceiling: 8000 feet AGL
Clouds: few clouds at 1800 feet AGL
scattered clouds at 2000 feet AGL
broken clouds at 8000 feet AGL
Weather: -TSRA  (light rain associated with thunderstorm(s))

METAR text: VTUK 171500Z 21007KT 140V250 8000 TS FEW018CB SCT020 BKN080 29/22 Q1010 TEMPO FM1515 5000 TSRA
Conditions at: VTUK (KHON KAEN , TH) observed 1500 UTC 17 April 2019
Temperature: 29.0°C (84°F)
Dewpoint: 22.0°C (72°F) [RH = 66%]
Pressure (altimeter): 29.82 inches Hg (1010.0 mb)
Winds: from the SSW (210 degrees) at 8 MPH (7 knots; 3.6 m/s)
Visibility: 5 miles ( 8 km)
Ceiling: 8000 feet AGL
Clouds: few clouds at 1800 feet AGL
scattered clouds at 2000 feet AGL
broken clouds at 8000 feet AGL
Weather: TS  (thunderstorm)

METAR text: VTUK 171400Z 18008KT 130V250 9999 VCTS FEW018CB SCT025 SCT100 34/21 Q1009 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1400 UTC 17 April 2019
Temperature: 34.0°C (93°F)
Dewpoint: 21.0°C (70°F) [RH = 47%]
Pressure (altimeter): 29.79 inches Hg (1009.0 mb)
Winds: from the S (180 degrees) at 9 MPH (8 knots; 4.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 1800 feet AGL
scattered clouds at 2500 feet AGL
scattered clouds at 10000 feet AGL
Weather: VCTS  (thunderstorm in vicinity)

METAR text: VTUK 171300Z 11003KT 090V150 9999 VCTS FEW020CB SCT100 35/20 Q1007 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1300 UTC 17 April 2019
Temperature: 35.0°C (95°F)
Dewpoint: 20.0°C (68°F) [RH = 42%]
Pressure (altimeter): 29.73 inches Hg (1007.0 mb)
Winds: from the ESE (110 degrees) at 3 MPH (3 knots; 1.5 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 2000 feet AGL
scattered clouds at 10000 feet AGL
Weather: VCTS  (thunderstorm in vicinity)

METAR text: VTUK 171200Z 05002KT 9999 FEW030 34/20 Q1006 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1200 UTC 17 April 2019
Temperature: 34.0°C (93°F)
Dewpoint: 20.0°C (68°F) [RH = 44%]
Pressure (altimeter): 29.70 inches Hg (1006.0 mb)
Winds: from the NE (50 degrees) at 2 MPH (2 knots; 1.0 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 171100Z 20004KT 160V240 9999 FEW030 37/20 Q1005 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1100 UTC 17 April 2019
Temperature: 37.0°C (99°F)
Dewpoint: 20.0°C (68°F) [RH = 37%]
Pressure (altimeter): 29.68 inches Hg (1005.0 mb)
Winds: from the SSW (200 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 171000Z 25005KT 220V280 9999 FEW030 39/20 Q1005 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 1000 UTC 17 April 2019
Temperature: 39.0°C (102°F)
Dewpoint: 20.0°C (68°F) [RH = 33%]
Pressure (altimeter): 29.68 inches Hg (1005.0 mb)
Winds: from the WSW (250 degrees) at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 170900Z 25006KT 200V320 9999 FEW030 40/21 Q1005 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0900 UTC 17 April 2019
Temperature: 40.0°C (104°F)
Dewpoint: 21.0°C (70°F) [RH = 34%]
Pressure (altimeter): 29.68 inches Hg (1005.0 mb)
Winds: from the WSW (250 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3000 feet AGL
Weather: no significant weather observed at this time

METAR text: VTUK 170800Z 23010KT 190V260 9999 SCT030 37/22 Q1006 NOSIG
Conditions at: VTUK (KHON KAEN , TH) observed 0800 UTC 17 April 2019
Temperature: 37.0°C (99°F)
Dewpoint: 22.0°C (72°F) [RH = 42%]
Pressure (altimeter): 29.70 inches Hg (1006.0 mb)
Winds: from the SW (230 degrees) at 12 MPH (10 knots; 5.1 m/s)
Visibility: 6 or more miles (10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 3000 feet AGL
Weather: no significant weather observed at this time

Forecast for: VTUK (KHON KAEN , TH)
Text: TAF VTUK 181700Z 1818/1918 23005KT 9000 FEW035
Forecast period: 1800 UTC 18 April 2019 to 1800 UTC 19 April 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the SW (230 degrees) at 6 MPH (5 knots; 2.6 m/s)
Visibility: 6 miles (9 km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 3500 feet AGL
Weather: no significant weather forecast for this period