Historical data for weatherstation Schiphol (🇳🇱) KNMI

Historical data for July 21, 2023

Daily summary for: July 21, 2023

Max. Temperature 19.7 °C (2:50 p.m.)
Min. Temperature 13.4 °C (6 a.m.)
Max. Windspeed 44.2 km/h (5:50 p.m.)
Total Precipitation 0.0 mm

Graphs

Temperature on July 21, 2023

Windspeed on July 21, 2023

Pressure on July 21, 2023

Humidity on July 21, 2023

Solarradiation on July 21, 2023

Precipitation on July 21, 2023

Precipitation rate on July 21, 2023

All observations

Time Temperature Dewpoint Humidity Windspeed Winddirection Precipitation Precipitation rate Pressure Solarradiation UV
midnight 15.1 °C 10.9 °C 76 % 9.1 km/h N 0.0 mm 0.0 mm/h 1013.5 hPa 0.0 w/m^2
12:10 a.m. 15.1 °C 11.1 °C 76 % 9.2 km/h N 0.0 mm 0.0 mm/h 1013.5 hPa 0.0 w/m^2
12:20 a.m. 15.3 °C 11.1 °C 76 % 6.1 km/h N 0.0 mm 0.0 mm/h 1013.4 hPa 0.0 w/m^2
12:30 a.m. 15.2 °C 11.2 °C 76 % 5.3 km/h N 0.0 mm 0.0 mm/h 1013.3 hPa 0.0 w/m^2
12:40 a.m. 14.9 °C 11.1 °C 77 % 5.0 km/h N 0.0 mm 0.0 mm/h 1013.3 hPa 0.0 w/m^2
12:50 a.m. 15.0 °C 11.1 °C 77 % 4.5 km/h NE 0.0 mm 0.0 mm/h 1013.3 hPa 0.0 w/m^2
1 a.m. 14.7 °C 11.4 °C 80 % 3.7 km/h NE 0.0 mm 0.0 mm/h 1013.3 hPa 0.0 w/m^2
1:10 a.m. 15.0 °C 11.2 °C 78 % 2.6 km/h NE 0.0 mm 0.0 mm/h 1013.2 hPa 0.0 w/m^2
1:20 a.m. 15.3 °C 11.0 °C 75 % 2.2 km/h NE 0.0 mm 0.0 mm/h 1013.1 hPa 0.0 w/m^2
1:30 a.m. 15.0 °C 11.0 °C 76 % 2.5 km/h NE 0.0 mm 0.0 mm/h 1013.1 hPa 0.0 w/m^2
1:40 a.m. 14.8 °C 11.1 °C 78 % 1.8 km/h NE 0.0 mm 0.0 mm/h 1013.0 hPa 0.0 w/m^2
1:50 a.m. 14.7 °C 10.9 °C 77 % 2.4 km/h NE 0.0 mm 0.0 mm/h 1013.0 hPa 0.0 w/m^2
2 a.m. 14.7 °C 11.3 °C 80 % 8.5 km/h NW 0.0 mm 0.0 mm/h 1013.0 hPa 0.0 w/m^2
2:10 a.m. 14.4 °C 11.6 °C 83 % 8.1 km/h NW 0.0 mm 0.0 mm/h 1013.0 hPa 0.0 w/m^2
2:20 a.m. 14.3 °C 11.5 °C 83 % 9.4 km/h NW 0.0 mm 0.0 mm/h 1013.0 hPa 0.0 w/m^2
2:30 a.m. 14.1 °C 11.5 °C 84 % 9.0 km/h NW 0.0 mm 0.0 mm/h 1012.9 hPa 0.0 w/m^2
2:40 a.m. 14.4 °C 11.6 °C 83 % 7.3 km/h NW 0.0 mm 0.0 mm/h 1012.8 hPa 0.0 w/m^2
2:50 a.m. 14.7 °C 11.7 °C 82 % 5.2 km/h NW 0.0 mm 0.0 mm/h 1012.8 hPa 0.0 w/m^2
3 a.m. 14.4 °C 11.8 °C 84 % 4.1 km/h NW 0.0 mm 0.0 mm/h 1012.6 hPa 0.0 w/m^2
3:10 a.m. 14.6 °C 11.7 °C 82 % 4.1 km/h N 0.0 mm 0.0 mm/h 1012.5 hPa 0.0 w/m^2
3:20 a.m. 14.6 °C 11.8 °C 83 % 4.0 km/h NE 0.0 mm 0.0 mm/h 1012.5 hPa 0.0 w/m^2
3:30 a.m. 14.7 °C 12.1 °C 84 % 3.8 km/h NE 0.0 mm 0.0 mm/h 1012.4 hPa 0.0 w/m^2
3:40 a.m. 14.6 °C 12.0 °C 84 % 3.2 km/h N 0.0 mm 0.0 mm/h 1012.4 hPa 0.0 w/m^2
3:50 a.m. 14.5 °C 11.8 °C 84 % 3.7 km/h N 0.0 mm 0.0 mm/h 1012.3 hPa 0.0 w/m^2
4 a.m. 14.7 °C 11.9 °C 83 % 3.6 km/h N 0.0 mm 0.0 mm/h 1012.2 hPa 0.0 w/m^2
4:10 a.m. 14.6 °C 12.0 °C 84 % 4.0 km/h N 0.0 mm 0.0 mm/h 1012.2 hPa 0.0 w/m^2
4:20 a.m. 14.5 °C 12.0 °C 84 % 3.0 km/h NW 0.0 mm 0.0 mm/h 1012.2 hPa 0.0 w/m^2
4:30 a.m. 14.5 °C 12.0 °C 85 % 2.1 km/h NW 0.0 mm 0.0 mm/h 1012.1 hPa 0.0 w/m^2
4:40 a.m. 14.9 °C 12.0 °C 82 % 2.6 km/h NW 0.0 mm 0.0 mm/h 1012.1 hPa 0.0 w/m^2
4:50 a.m. 15.0 °C 11.8 °C 81 % 2.0 km/h NW 0.0 mm 0.0 mm/h 1012.1 hPa 0.0 w/m^2
5 a.m. 14.7 °C 11.8 °C 82 % 1.5 km/h NW 0.0 mm 0.0 mm/h 1012.0 hPa 0.0 w/m^2
5:10 a.m. 14.5 °C 11.8 °C 84 % 3.2 km/h NW 0.0 mm 0.0 mm/h 1012.0 hPa 0.0 w/m^2
5:20 a.m. 14.5 °C 11.8 °C 84 % 2.7 km/h NW 0.0 mm 0.0 mm/h 1011.9 hPa 0.0 w/m^2
5:30 a.m. 14.2 °C 11.9 °C 86 % 1.4 km/h NW 0.0 mm 0.0 mm/h 1011.9 hPa 0.0 w/m^2
5:40 a.m. 13.6 °C 11.8 °C 88 % 2.1 km/h NW 0.0 mm 0.0 mm/h 1011.8 hPa 0.0 w/m^2
5:50 a.m. 13.7 °C 12.3 °C 91 % 2.1 km/h NW 0.0 mm 0.0 mm/h 1011.8 hPa 1.0 w/m^2
6 a.m. 13.4 °C 12.3 °C 93 % 1.5 km/h NW 0.0 mm 0.0 mm/h 1011.8 hPa 4.0 w/m^2
6:10 a.m. 13.5 °C 12.0 °C 90 % 4.1 km/h NW 0.0 mm 0.0 mm/h 1011.7 hPa 11.0 w/m^2
6:20 a.m. 13.7 °C 11.7 °C 87 % 4.4 km/h NW 0.0 mm 0.0 mm/h 1011.5 hPa 19.0 w/m^2
6:30 a.m. 13.5 °C 12.0 °C 90 % 3.5 km/h N 0.0 mm 0.0 mm/h 1011.4 hPa 23.0 w/m^2
6:40 a.m. 13.8 °C 12.4 °C 90 % 2.6 km/h NE 0.0 mm 0.0 mm/h 1011.4 hPa 30.0 w/m^2
6:50 a.m. 14.1 °C 12.5 °C 89 % 1.6 km/h NE 0.0 mm 0.0 mm/h 1011.3 hPa 57.0 w/m^2
7 a.m. 14.3 °C 12.6 °C 89 % 3.8 km/h E 0.0 mm 0.0 mm/h 1011.2 hPa 75.0 w/m^2
7:10 a.m. 15.0 °C 13.4 °C 90 % 3.8 km/h SE 0.0 mm 0.0 mm/h 1011.3 hPa 98.0 w/m^2
7:20 a.m. 15.3 °C 13.0 °C 86 % 7.0 km/h S 0.0 mm 0.0 mm/h 1011.3 hPa 75.0 w/m^2
7:30 a.m. 15.4 °C 12.8 °C 84 % 7.3 km/h S 0.0 mm 0.0 mm/h 1011.3 hPa 72.0 w/m^2
7:40 a.m. 15.7 °C 12.5 °C 81 % 6.3 km/h S 0.0 mm 0.0 mm/h 1011.3 hPa 73.0 w/m^2
7:50 a.m. 15.9 °C 12.6 °C 81 % 6.4 km/h S 0.0 mm 0.0 mm/h 1011.2 hPa 75.0 w/m^2
8 a.m. 15.9 °C 12.5 °C 80 % 6.2 km/h SE 0.0 mm 0.0 mm/h 1011.3 hPa 82.0 w/m^2
8:10 a.m. 15.9 °C 12.7 °C 81 % 7.6 km/h S 0.0 mm 0.0 mm/h 1011.3 hPa 80.0 w/m^2
8:20 a.m. 16.1 °C 12.8 °C 80 % 6.7 km/h S 0.0 mm 0.0 mm/h 1011.4 hPa 88.0 w/m^2
8:30 a.m. 16.2 °C 12.1 °C 76 % 6.2 km/h S 0.0 mm 0.0 mm/h 1011.3 hPa 98.0 w/m^2
8:40 a.m. 16.4 °C 12.3 °C 76 % 4.5 km/h SW 0.0 mm 0.0 mm/h 1011.3 hPa 116.0 w/m^2
8:50 a.m. 16.5 °C 12.2 °C 75 % 4.4 km/h SW 0.0 mm 0.0 mm/h 1011.4 hPa 131.0 w/m^2
9 a.m. 16.7 °C 11.6 °C 71 % 10.2 km/h W 0.0 mm 0.0 mm/h 1011.3 hPa 149.0 w/m^2
9:10 a.m. 16.9 °C 12.3 °C 74 % 8.3 km/h W 0.0 mm 0.0 mm/h 1011.3 hPa 191.0 w/m^2
9:20 a.m. 17.0 °C 11.9 °C 71 % 12.2 km/h SW 0.0 mm 0.0 mm/h 1011.3 hPa 212.0 w/m^2
9:30 a.m. 17.1 °C 12.0 °C 71 % 10.8 km/h SW 0.0 mm 0.0 mm/h 1011.2 hPa 251.0 w/m^2
9:40 a.m. 17.3 °C 11.7 °C 69 % 13.6 km/h S 0.0 mm 0.0 mm/h 1011.2 hPa 310.0 w/m^2
9:50 a.m. 17.6 °C 12.2 °C 70 % 10.4 km/h W 0.0 mm 0.0 mm/h 1011.2 hPa 341.0 w/m^2
10 a.m. 17.5 °C 11.6 °C 68 % 13.1 km/h W 0.0 mm 0.0 mm/h 1011.2 hPa 287.0 w/m^2
10:10 a.m. 17.4 °C 11.1 °C 66 % 16.7 km/h SW 0.0 mm 0.0 mm/h 1011.2 hPa 240.0 w/m^2
10:20 a.m. 17.5 °C 11.8 °C 69 % 17.5 km/h SW 0.0 mm 0.0 mm/h 1011.2 hPa 246.0 w/m^2
10:30 a.m. 17.5 °C 11.4 °C 67 % 16.8 km/h SW 0.0 mm 0.0 mm/h 1011.3 hPa 275.0 w/m^2
10:40 a.m. 17.5 °C 11.4 °C 67 % 18.5 km/h SW 0.0 mm 0.0 mm/h 1011.3 hPa 240.0 w/m^2
10:50 a.m. 17.8 °C 11.8 °C 68 % 15.7 km/h SW 0.0 mm 0.0 mm/h 1011.3 hPa 276.0 w/m^2
11 a.m. 17.9 °C 11.4 °C 65 % 17.6 km/h SW 0.0 mm 0.0 mm/h 1011.2 hPa 369.0 w/m^2
11:10 a.m. 18.1 °C 11.9 °C 66 % 14.8 km/h W 0.0 mm 0.0 mm/h 1011.2 hPa 414.0 w/m^2
11:20 a.m. 18.2 °C 12.0 °C 66 % 19.2 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 321.0 w/m^2
11:30 a.m. 18.6 °C 12.2 °C 66 % 17.8 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 381.0 w/m^2
11:40 a.m. 18.4 °C 11.9 °C 65 % 19.7 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 337.0 w/m^2
11:50 a.m. 18.5 °C 11.0 °C 61 % 20.5 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 360.0 w/m^2
noon 18.8 °C 10.3 °C 57 % 22.3 km/h W 0.0 mm 0.0 mm/h 1011.0 hPa 490.0 w/m^2
12:10 p.m. 18.4 °C 10.6 °C 60 % 23.5 km/h W 0.0 mm 0.0 mm/h 1010.9 hPa 296.0 w/m^2
12:20 p.m. 18.4 °C 9.8 °C 57 % 30.2 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 222.0 w/m^2
12:30 p.m. 18.4 °C 10.8 °C 61 % 28.7 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 259.0 w/m^2
12:40 p.m. 18.0 °C 10.9 °C 63 % 26.5 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 153.0 w/m^2
12:50 p.m. 17.6 °C 11.0 °C 65 % 24.1 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 128.0 w/m^2
1 p.m. 18.0 °C 9.6 °C 58 % 28.9 km/h W 0.0 mm 0.0 mm/h 1011.3 hPa 276.0 w/m^2
1:10 p.m. 18.3 °C 9.8 °C 57 % 25.0 km/h W 0.0 mm 0.0 mm/h 1011.3 hPa 682.0 w/m^2
1:20 p.m. 18.7 °C 10.3 °C 58 % 26.9 km/h W 0.0 mm 0.0 mm/h 1011.3 hPa 652.0 w/m^2
1:30 p.m. 19.1 °C 12.1 °C 63 % 31.0 km/h W 0.0 mm 0.0 mm/h 1011.3 hPa 781.0 w/m^2
1:40 p.m. 18.4 °C 11.9 °C 65 % 26.4 km/h W 0.0 mm 0.0 mm/h 1011.3 hPa 548.0 w/m^2
1:50 p.m. 19.5 °C 12.3 °C 63 % 31.5 km/h W 0.0 mm 0.0 mm/h 1011.2 hPa 784.0 w/m^2
2 p.m. 18.9 °C 12.0 °C 64 % 29.4 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 648.0 w/m^2
2:10 p.m. 18.8 °C 11.9 °C 63 % 33.5 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 464.0 w/m^2
2:20 p.m. 19.4 °C 11.6 °C 60 % 34.5 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 741.0 w/m^2
2:30 p.m. 18.7 °C 12.1 °C 65 % 35.9 km/h W 0.0 mm 0.0 mm/h 1011.1 hPa 597.0 w/m^2
2:40 p.m. 18.7 °C 11.6 °C 63 % 35.2 km/h W 0.0 mm 0.0 mm/h 1011.2 hPa 502.0 w/m^2
2:50 p.m. 19.7 °C 12.4 °C 63 % 34.7 km/h NW 0.0 mm 0.0 mm/h 1011.3 hPa 777.0 w/m^2
3 p.m. 19.3 °C 11.5 °C 60 % 35.0 km/h NW 0.0 mm 0.0 mm/h 1011.3 hPa 576.0 w/m^2
3:10 p.m. 18.6 °C 10.9 °C 60 % 36.3 km/h W 0.0 mm 0.0 mm/h 1011.5 hPa 519.0 w/m^2
3:20 p.m. 18.9 °C 10.7 °C 59 % 35.3 km/h NW 0.0 mm 0.0 mm/h 1011.5 hPa 750.0 w/m^2
3:30 p.m. 18.7 °C 10.6 °C 59 % 28.3 km/h W 0.0 mm 0.0 mm/h 1011.6 hPa 597.0 w/m^2
3:40 p.m. 18.8 °C 10.8 °C 59 % 36.8 km/h W 0.0 mm 0.0 mm/h 1011.6 hPa 731.0 w/m^2
3:50 p.m. 18.2 °C 10.1 °C 59 % 38.3 km/h W 0.0 mm 0.0 mm/h 1011.6 hPa 442.0 w/m^2
4 p.m. 18.4 °C 9.8 °C 57 % 38.2 km/h NW 0.0 mm 0.0 mm/h 1011.7 hPa 590.0 w/m^2
4:10 p.m. 18.4 °C 10.5 °C 59 % 38.4 km/h W 0.0 mm 0.0 mm/h 1011.8 hPa 613.0 w/m^2
4:20 p.m. 18.4 °C 9.6 °C 56 % 34.1 km/h W 0.0 mm 0.0 mm/h 1011.7 hPa 563.0 w/m^2
4:30 p.m. 19.0 °C 10.4 °C 57 % 38.4 km/h W 0.0 mm 0.0 mm/h 1011.8 hPa 709.0 w/m^2
4:40 p.m. 18.7 °C 9.6 °C 55 % 37.2 km/h W 0.0 mm 0.0 mm/h 1011.9 hPa 630.0 w/m^2
4:50 p.m. 18.3 °C 9.9 °C 58 % 36.2 km/h W 0.0 mm 0.0 mm/h 1011.9 hPa 478.0 w/m^2
5 p.m. 18.3 °C 11.2 °C 62 % 34.7 km/h W 0.0 mm 0.0 mm/h 1011.9 hPa 575.0 w/m^2
5:10 p.m. 17.8 °C 11.6 °C 67 % 35.5 km/h NW 0.0 mm 0.0 mm/h 1012.0 hPa 389.0 w/m^2
5:20 p.m. 17.7 °C 11.2 °C 65 % 31.6 km/h NW 0.0 mm 0.0 mm/h 1012.0 hPa 424.0 w/m^2
5:30 p.m. 17.8 °C 9.1 °C 56 % 38.9 km/h NW 0.0 mm 0.0 mm/h 1012.0 hPa 365.0 w/m^2
5:40 p.m. 18.0 °C 9.2 °C 56 % 41.9 km/h W 0.0 mm 0.0 mm/h 1012.1 hPa 352.0 w/m^2
5:50 p.m. 18.4 °C 8.1 °C 51 % 44.2 km/h W 0.0 mm 0.0 mm/h 1012.1 hPa 507.0 w/m^2
6 p.m. 18.3 °C 8.1 °C 51 % 40.9 km/h W 0.0 mm 0.0 mm/h 1012.2 hPa 511.0 w/m^2
6:10 p.m. 18.1 °C 8.9 °C 54 % 38.7 km/h W 0.0 mm 0.0 mm/h 1012.3 hPa 509.0 w/m^2
6:20 p.m. 17.3 °C 9.1 °C 58 % 39.6 km/h W 0.0 mm 0.0 mm/h 1012.4 hPa 362.0 w/m^2
6:30 p.m. 18.3 °C 9.6 °C 56 % 36.1 km/h W 0.0 mm 0.0 mm/h 1012.4 hPa 523.0 w/m^2
6:40 p.m. 17.3 °C 9.2 °C 58 % 40.7 km/h W 0.0 mm 0.0 mm/h 1012.5 hPa 345.0 w/m^2
6:50 p.m. 17.9 °C 9.8 °C 59 % 36.0 km/h W 0.0 mm 0.0 mm/h 1012.5 hPa 394.0 w/m^2
7 p.m. 17.9 °C 9.4 °C 57 % 34.5 km/h W 0.0 mm 0.0 mm/h 1012.5 hPa 396.0 w/m^2
7:10 p.m. 17.1 °C 9.7 °C 61 % 37.0 km/h W 0.0 mm 0.0 mm/h 1012.6 hPa 260.0 w/m^2
7:20 p.m. 17.3 °C 10.2 °C 62 % 34.0 km/h W 0.0 mm 0.0 mm/h 1012.7 hPa 297.0 w/m^2
7:30 p.m. 16.8 °C 9.4 °C 61 % 35.0 km/h W 0.0 mm 0.0 mm/h 1012.7 hPa 197.0 w/m^2
7:40 p.m. 17.0 °C 8.7 °C 57 % 36.4 km/h W 0.0 mm 0.0 mm/h 1012.8 hPa 229.0 w/m^2
7:50 p.m. 16.9 °C 9.9 °C 63 % 34.7 km/h W 0.0 mm 0.0 mm/h 1012.8 hPa 167.0 w/m^2
8 p.m. 17.0 °C 9.9 °C 63 % 34.5 km/h W 0.0 mm 0.0 mm/h 1012.8 hPa 225.0 w/m^2
8:10 p.m. 17.1 °C 9.7 °C 61 % 31.0 km/h W 0.0 mm 0.0 mm/h 1012.8 hPa 193.0 w/m^2
8:20 p.m. 16.5 °C 9.9 °C 64 % 33.3 km/h W 0.0 mm 0.0 mm/h 1012.8 hPa 104.0 w/m^2
8:30 p.m. 16.4 °C 9.8 °C 64 % 30.1 km/h W 0.0 mm 0.0 mm/h 1012.8 hPa 91.0 w/m^2
8:40 p.m. 16.3 °C 9.8 °C 65 % 27.5 km/h W 0.0 mm 0.0 mm/h 1012.8 hPa 70.0 w/m^2
8:50 p.m. 16.5 °C 9.9 °C 65 % 24.8 km/h W 0.0 mm 0.0 mm/h 1012.9 hPa 44.0 w/m^2
9 p.m. 16.5 °C 9.9 °C 64 % 25.5 km/h W 0.0 mm 0.0 mm/h 1013.0 hPa 32.0 w/m^2
9:10 p.m. 16.6 °C 9.5 °C 62 % 27.3 km/h W 0.0 mm 0.0 mm/h 1013.0 hPa 37.0 w/m^2
9:20 p.m. 16.4 °C 9.7 °C 64 % 26.9 km/h W 0.0 mm 0.0 mm/h 1013.0 hPa 19.0 w/m^2
9:30 p.m. 16.5 °C 9.8 °C 64 % 21.1 km/h W 0.0 mm 0.0 mm/h 1013.1 hPa 13.0 w/m^2
9:40 p.m. 16.3 °C 9.7 °C 65 % 23.3 km/h W 0.0 mm 0.0 mm/h 1013.1 hPa 6.0 w/m^2
9:50 p.m. 16.2 °C 9.8 °C 65 % 23.4 km/h W 0.0 mm 0.0 mm/h 1013.2 hPa 2.0 w/m^2
10 p.m. 16.1 °C 9.9 °C 66 % 18.9 km/h W 0.0 mm 0.0 mm/h 1013.3 hPa 0.0 w/m^2
10:10 p.m. 15.7 °C 9.9 °C 68 % 18.5 km/h W 0.0 mm 0.0 mm/h 1013.4 hPa 0.0 w/m^2
10:20 p.m. 15.1 °C 10.3 °C 72 % 17.6 km/h W 0.0 mm 0.0 mm/h 1013.4 hPa 0.0 w/m^2
10:40 p.m. 14.7 °C 10.4 °C 75 % 18.5 km/h SW 0.0 mm 0.0 mm/h 1013.5 hPa 0.0 w/m^2
10:50 p.m. 14.6 °C 10.6 °C 76 % 19.2 km/h SW 0.0 mm 0.0 mm/h 1013.7 hPa 0.0 w/m^2
11 p.m. 14.7 °C 10.7 °C 77 % 19.5 km/h SW 0.0 mm 0.0 mm/h 1013.7 hPa 0.0 w/m^2
11:10 p.m. 14.5 °C 11.0 °C 79 % 18.1 km/h SW 0.0 mm 0.0 mm/h 1013.7 hPa 0.0 w/m^2
11:20 p.m. 14.5 °C 11.2 °C 80 % 16.5 km/h SW 0.0 mm 0.0 mm/h 1013.8 hPa 0.0 w/m^2