Surbiton Lawn Speeds

Note 1: A 'Plummer' is defined as the length of time, in seconds, taken by a croquet ball struck by a mallet to travel exactly 35 yards (the length of a croquet court) before coming to rest.

Note 2: Penetrometer reading (1 bar = 1 atmospheric pressure): This is the amount of force required to drive a probe to the depth of a hoop carrot. The higher the reading the harder the ground. Hoops set in hard ground are generally more difficult to run than those in soft ground.

Lawn Number & Lawn Speed in Plummers and penetrometer readings (bar)Conditions
      1            2             3             4             5             6             7             8       Cutting heightWeather Date Time 7 day rain /
 7 day irrigation
11.5  12.0 12.4  13.0  12.8  12.2  11.6    4.5mm
31°c 		30-Jul-24 14.00 2mm / 0mm
11.8  11.4 11.6  11.1  11.8  11.9  11.2    5mm
24°c 		21-Jun-24 11.30 0mm / 0mm
11.1  10.9 10.9  11.1  11.2  11.1  10.8    5mm
16°c 		11-Jun-24 15.00 2mm / 0mm
11.1  11.1 11.1  10.7  11.0  10.7  10.6    5mm
18°c 		7-Jun-23 13.00 1mm / 0mm
9.8  11.0 10.8  11.1  11.4  11.2  10.5    4mm
20°c 		3-Aug-23 12.00 15mm / 0mm
10.1  11.7 12.2  11.6  11.8  11.3  11.1    4mm
22°c 		13-Jul-23 16.00 9mm / 0mm
13.6  13.9 13.7  14.8  14.7  13.6  13.6    5mm
32.2°c 		12-Aug-22 12.30 0mm / 5mm
14.1  14.4 14.3  14.0  14.5  14.2  13.9    5mm
24.9°c 		04-Aug-22 12.30 0mm / 0mm
13.3  13.5 13.7  12.7  13.3  13.2  12.8    5mm
24°c 		02-Aug-22 12.00 0mm / 0mm
12.3  12.2 12.7  13.0  12.7  12.4  11.5    5mm
29°c 		16-Jul-22 12.00 0mm / 9mm
12.9
(5.5)  		13.1
(5.5)  		12.7
(6.0)  		12.8
(6.0)  		12.5
(5.0)  		12.5
(3.5)  		11.8
(4.0)  		  5mm
24°c 		05-Jul-22 14.00 6mm / 6mm
10.4
(3.2)  		10.9
(3.2)  		10.7
(3.2)  		10.6
(3.1)  		10.4
(3.1)  		9.9
(3.0)  		9.9
(2.9)  		  4mm
24°c 		02-Jul-21 13.00 24mm / 0.0mm
10.2
(3.6)  		10.7
(4.0)  		10.5
(3.8)  		10.6
(3.8)  		10.3
(4.0)  		10.4
(2.9)  		10.3
(3.0)  		  6mm
11°c 		16- Apr-21 11.00 0.75mm / 6.00mm
9.9
(4.2)  		10.7
(3.8)  		10.7
(3.8)  		11.0
(3.2)  		10.5
(3.2)  		10.3
(3.2)  		11.0
(3.0)  		  6mm
11°c 		09- Apr-21 11.00 0mm / 0mm
8.6
(3.0)  		8.7
(3.2)  		8.7
(3.2)  		9.0
(3.0)  		8.8
(3.0)  		8.4*
(2.8)  		8.4
(2.6)  		  6/8*mm
10°c 		20- Mar-21 12.00 10mm / 0mm
10.410.510.710.910.510.410.1  5mm
18.5°c 		4- Sep-20 14.00
12.412.212.012.412.212.611.5  5mm
27°c 		30- Jul-20 14.00
11.911.511.411.411.611.510.5  5mm
25°c 		21- Jul-20 11.00
10.710.510.19.79.89.59.6  6mm
24°c 		26-May-20 12.00
11.011.411.510.911.310.710.7  4mm
23°c 		02-Aug-19 9.00
11.611.812.112.211.812.011.3  4mm
21°c 		02-Jul-19 9.15
11.211.411.712.011.712.411.010.6 4mm
24°c 		28-Jun-19 14.00
10.511.110.710.79.99.810.2  5mm
24°c 		25-May-19 14.00
9.810.510.410.49.59.89.8  6mm
14°c 		7-May-19 13.00
13.813.212.714.813.612.012.4  5mm
29.5°c 		3-Aug-18 13.00
11.712.212.512.212.211.312.4  5mm
28.5°c 		27-Jul-18 10.30
10.210.210.611.110.610.410.6  5mm
25°c 		06-Jul-18 10.00
11.011.010.610.710.310.810.4  5mm
20°c 		03-Aug-17 17.00
11.711.811.211.610.211.111.3  5mm
18.5°c 		12-Jun-17 16.30
11.211.111.011.19.59.910.5  5mm
20.5°c 		9-Jun-17 17.00
10.210.410.510.28.310.29.9  6mm
22°c 		2-Jun-17 15.00
11.611.811.411.4*7.010.510.7  6mm (*15)
15°c 		13-Apr-17 14.00
10.811.110.811.410.910.811.5  5mm
20°c 		30-Sep-16 14.00
11.410.911.511.311.411.211.2  5mm
23°c 		4-Aug-16 15.00
10.510.511.511.310.611.310.5  5mm
23°c 		29-Jul-16 13.00
10.610.811.110.710.710.610.6  5mm
16°c 		16-May-16 8.30
10.911.811.211.411.011.011.7  5mm
22°c 		6-May-16 15.00
10.19.29.210.19.88.58.9  8mm
8°c 		26-Feb-16 14.00
11.110.510.911.110.510.59.9  5mm
21°c 		03-Jul-15 13.00
11.111.711.611.711.610.410.8  5mm
22°c 		06-Aug-15 16.00
12.612.512.012.913.011.411.6  4mm
24°c 		11-Jul-15 9.00
12.212.111.612.112.711.411.2  4mm
25°c 		03-Jul-15 16.00
11.211.610.811.411.811.011.0  5mm
23°c 		26-Jun-15 17.00
11.111.110.311.410.910.410.1  5mm
20°c 		19-Jun-15 14.30
11.011.210.510.610.510.410.0  6mm
18°c 		12-May-15 14.00
10.410.010.410.410.39.99.6  6mm
14°c 		17-Apr-15 14.00
10.610.210.710.711.38.6*8.5*  6/8*mm
12°c 		01-Apr-15 13.00
10.59.010.210.510.06.9*6.5*  9/12*mm
13°c 		6-Mar-15 13.00
9.28.59.38.09.26.4*6.7*  12/20*mm
8°c 		21-Dec-14 14.00
11.611.612.011.811.4 11.811.5  5mm
27°c 		13-Jun-14 15.00
10.910.811.311.010.8 11.011.0  5mm
24°c 		06-Jun-14 15.30
10.910.710.711.011.3 10.711.4  6mm
23°c 		16-May-14 15.00
10.910.710.811.010.9 10.810.9  6mm
17°c 		17-Apr-14 14.00
8.28.78.6 8.68.6 7.57.8  12mm
10°c 		21-Feb-14 14.00
8.88.28.8 8.29.6 8.77.9  12mm
8°c 		01-Dec-13 10.00
12.112.712.0 12.212.4 12.211.211.6 4mm
24°c 		08-Aug-13 14.00
12.813.4 12.512.7 12.712.511.2  5mm
33°c 		22-Jul-13 14.00
10.811.3 11.010.8 10.910.910.8  5mm
26°c 		05-Jul-13 15.00
10.611.1 11.010.9 11.19.010.4  6mm
20°c 		04-Jun-13 15.00
10.110.4 10.610.7 10.2*7.610.6  6/*14mm
17°c 		10-May-13 14.00
10.59.9 10.610.5 10.4*10.4  6mm
7°c 		29-Mar-13 10.00
10.09.0 10.210.2 10.2*9.9  7mm
8°c 		14-Mar-13 14.30
9.58.9 9.88.8 9.68.78.7  10mm
6°c 		04-Feb-13 14.00
9.08.3 9.29.4 9.88.68.6  10mm
2°c 		02-Dec-12 14.30
11.1 11.0 11.110.6 10.710.1 10.4  5mm
16°c 		05-Oct-12 14.30
11.7 11.6 12.011.7 11.811.7 11.6  5mm
25°c 		09-Aug-12 17.00
12.1 12.6 12.311.5 11.711.9 11.8  6mm
24°c 		27-Jul-12 14.00
10.0 10.6 11.110.4 10.610.2 10.5  6mm
20°c 		20-Jul-12 14.00
11.2 10.4 11.810.7 10.5 11.4 11.3  6mm
21°c 		29-Jun-12 14.00
10.1 10.0 11.511.5 11.0 10.8 10.3  6mm
9°c 		5-Apr-12 17.00
9.9 9.9 11.211.0 10.8 10.6 9.7  6mm
20°c 		30-Mar-12 15.00
8.3 8.6 10.4 9.6 9.5 9.0 8.5  10mm
13°c 		2-Mar-12 15.00
11.2 11.2 10.9 10.6 10.5 10.5 11.2  5mm
25°c 		2-Sep-11 15.00
12.2 12.9 12.5 12.0 12.1 12.2 11.3 10.8 5mm
22°c 		1-Jul-11 14.00
10.9 11.6 11.5 11.1 11.1 10.8 10.6   6mm
22°c 		1-Jun-11 12.00
10.8 11.8 11.7 11.9 11.9 11.3 11.1   6mm
18°c 		13-May-11 15.00
10.0 11.1 10.5 10.9 10.4 9.8 9.9   6mm
24°c 		19-Apr-11 15.30
9.6 10.2 10.7 10.4 10.2 10.2 9.9   6mm
17°c 		15-Apr-11 17.00
9.0 9.2 10.0 10.9 9.9 9.8 9.2   6mm
16°c 		09-Apr-11 17.00
10.8 10.5 10.8 10.5 10.4 10.3 10.4   6mm
20°c 		13-Aug-10 18.00
11.1 11.4 10.9 11.00 10.7 10.4 9.7   6mm
24°c 		30-Jul-10 15.00
10.6 10.7 11.2 10.9 11.1 11.1 10.6   6mm
23°c 		16-Jul-10 15.00
11.5 12.3 12.5 12.2 11.8 11.8 11.1   6mm
26°c 		24-Jun-10 17.00
10.9 10.9 11.3 11.3 11.7 11.4 10.9   6mm
19°c 		18-Jun-10 16.00
10.9 11.1 11.8 11.4 11.7 12.1 11.7   6mm
17°c 		26-May-10 18.00
10.8 11.1 11.6 11.1 10.5 11.2 11.5   6mm
15°c 		14-May-10 12.00
10.5 11.2 11.2 11.4 11.4 10.5 10.5   6mm
14°c 		16-Apr-10 18.00
10.7 10.8 11.4 10.9 11.4 10.7 10.2   6mm
10°c 		1-Apr-10 16.00
12.9 12.2 12.0 12.4 11.7 10.9 11.4   6mm
20°c 		9-Sep-09 15.00
11.6 11.3 11.3 11.3 11.0 10.2 10.6   6mm
20°c 		4-Sep-09 16.00
11.0 11.2 10.7 10.7 10.2 10.0 10.3   6mm
24°c 		14-Aug-09 18.00
10.7 11.0 10.6 10.8 10.3 9.9 10.0   6mm
22°c 		04-Aug-09
12.4 12.8 12.4 12.4 11.9 11.1 11.6 12.2 6mm
22°c 		18-Jun-09
11.0 11.3 10.9 11.0 10.8 11.1 10.9  6mm
17°c 		15-May-09
10.7 10.9 11.2 11.1 11.0 10.8 10.8   6mm
14°c 		17-Apr-09
10.6 11.2 11.3 11.4 11.2 11.3 11.3   6mm
14°c 		09-Apr-09
10.2 10.8 11.9 10.7 11.2 10.7 9.7   6mm
13°c		 14-Mar-09
10.0 9.6 11.4 11.1 11.2 10.2 9.2   8mm
14°c 		27-Feb-09

Surbiton Croquet Club
© Copyright 2009-23

NF 30/07/24

Updated 30.vii.24
surbitoncroquet.org.uk/surbiton/membership/lawnspeed/lawnspeed.asp