Chan Hui Tung (陳許瞳)

Region	WCA ID	Gender	Competitions	Completed Solves
Hong Kong, China	2017TUNG16	Male	18	954

Current Personal Records

Event	NR	CR	WR	Single	Average	WR	CR	NR
3x3x3 Cube	48	2073	6309	8.41	10.41	6499	2227	47
2x2x2 Cube	26	1037	4711	1.89	3.23	3873	969	28
4x4x4 Cube	13	349	1134	29.47	37.08	1926	619	18
5x5x5 Cube	30	806	2411	1:08.38	1:12.02	1769	585	19
6x6x6 Cube	20	463	1471	2:09.62	2:19.20	1468	457	19
7x7x7 Cube	18	495	1497	3:25.68	3:41.97	1610	519	18
3x3x3 Blindfolded	21	1050	3116	2:05.02
3x3x3 Fewest Moves	5	107	476	26	34.67	989	228	7
3x3x3 One-Handed	25	1254	3676	14.78	17.35	2675	941	21
Clock	36	1173	5137	11.09	12.71	4592	1014	34
Megaminx	24	693	2550	1:04.30	1:08.82	2166	588	21
Pyraminx	34	2012	7497	4.16	6.60	7286	2126	37
Skewb	25	1319	5087	3.94	6.39	4951	1387	30
Square-1	3	34	202	6.81	8.58	134	24	2
3x3x3 Multi-Blind	17	732	2699	2/3 20:23

Medal Collection

Gold	Silver	Bronze
19	12	9

Record Collection

WR	CR	NR
		7

Competition	Round	Place	Single		Average		Solves
3x3x3 Cube
Half Turns in Hallett Cove 2024	Final	5	9.23		10.81		13.37	9.74	9.23	12.07	10.61
	First round	6	9.58		11.17		13.50	9.58	11.23	12.67	9.60
Adelaide Summer 2024	Final	8	8.93		10.72		12.04	10.92	10.16	8.93	11.09
	Semi Final	11	8.56		10.96		12.84	11.21	12.61	9.06	8.56
	Second round	14	9.23		11.41		16.24	12.63	9.23	10.51	11.10
	First round	8	8.64		10.41		12.21	10.60	9.58	8.64	11.04
South Australian Open 2023	Final	6	10.40		11.19		12.42	10.44	10.72	16.89	10.40
	Second round	11	11.80		12.10		16.20	11.92	11.80	12.11	12.27
	First round	7	10.69		11.71		11.48	14.15	12.69	10.69	10.95
Adelaide Winter Sunday 2023	Final	4	9.66		11.23		11.84	11.13	9.66	11.19	11.36
	Second round	7	9.49		12.14		12.47	12.40	12.29	9.49	11.72
	First round	4	9.89		11.88		12.66	12.87	12.11	10.86	9.89
South Australian Open 2022	Final	7	9.28		10.75		11.41	17.46	9.28	10.23	10.61
	Second round	8	9.35		11.61		14.67	9.35	12.88	11.95	9.99
	First round	8	8.82		11.28		10.22	12.76	13.36	10.85	8.82
Clare Valley Cubing 2022	Final	3	9.58		11.31		9.58	12.92	11.44	9.92	12.56
	Second round	4	9.93		11.54		11.81	12.81	11.29	9.93	11.52
	First round	4	11.36		12.59		11.36	12.08	13.60	12.10	14.58
Adelaide Autumn 2022	Final	2	8.97		11.49		9.32	13.14	12.01	14.41	8.97
	Second round	4	10.65		12.42		12.30	11.88	13.09	13.12	10.65
	First round	3	10.04		10.86		11.69	12.07	10.04	10.10	10.80
SA State Championship 2021	Final	3	10.58		11.09		11.90	11.00	10.90	11.38	10.58
	Second round	8	9.41		13.23		12.83	DNF	9.41	14.26	12.59
	First round	3	10.24		11.00		10.83	13.93	10.24	10.40	11.76
Adelaide Twin Sunday 2021	Final	3	8.41		10.87		10.06	10.77	12.23	11.77	8.41
	Second round	3	9.48		11.59		10.42	12.51	11.85	12.50	9.48
	First round	3	9.59		12.42		13.49	15.35	10.77	13.00	9.59
Altona Algorithms 2019	Final	10	9.98		11.78		12.80	9.98	14.40	11.23	11.32
	Second round	12	9.21		11.11		13.94	10.49	10.97	11.88	9.21
	First round	23	9.09		12.70		11.84	9.09	12.05	14.21	15.72
WCA World Championship 2019	Second round	266	11.30		11.89		11.65	13.12	12.08	11.30	11.94
	First round	371	10.53		13.24		13.68	14.64	10.53	11.41	15.78
Koalafication Melbourne 2019	Second round	32	12.81		13.59		12.81	13.29	22.02	14.16	13.33
	First round	26	12.06		12.85		18.89	13.50	12.06	12.32	12.72
Hong Kong Cube Day 2019	Second round	28	11.64		12.96		12.92	11.64	13.41	14.83	12.56
	First round	24	11.25		12.36		12.52	11.25	14.82	12.55	12.00
Australian Nationals 2018	Semi Final	30	10.04		11.73		13.24	10.59	11.36	DNF	10.04
	Second round	36	10.06		12.52		11.96	13.16	12.43	10.06	14.14
	First round	51	12.19		13.84		12.20	17.00	20.94	12.19	12.33
Hong Kong Open 2017	First round	31	12.49		13.71		12.49	13.13	DNF	13.73	14.28
2x2x2 Cube
Adelaide Summer 2024	First round	16	3.98		4.46		4.41	3.98	6.94	4.34	4.63
South Australian Open 2023	First round	31	3.01		6.14		12.30	10.49	4.72	3.01	3.21
South Australian Open 2022	Final	8	3.02		3.84		4.29	3.85	3.02	4.59	3.38
	First round	2	2.25		3.25		3.74	3.18	2.83	3.98	2.25
Clare Valley Cubing 2022	Final	1	2.40		3.42		2.40	5.13	2.77	4.64	2.85
	First round	4	3.04		4.58		3.35	3.89	9.26	6.50	3.04
Adelaide Autumn 2022	Final	2	2.23		3.34		3.34	4.25	2.23	2.42	6.11
	First round	2	2.26		3.60		4.26	2.26	2.47	4.70	4.08
SA State Championship 2021	Final	4	3.24		4.62		5.37	7.27	3.24	5.10	3.40
	Second round	1	2.68		3.75		3.95	3.41	4.94	3.89	2.68
	First round	2	2.33		3.67		2.33	4.69	4.13	4.34	2.53
Adelaide Twin Sunday 2021	Final	2	1.89		3.23		3.07	9.73	3.05	1.89	3.57
	Second round	3	3.39		4.01		3.68	3.39	4.44	6.84	3.90
	First round	3	2.67		3.77		4.84	4.53	3.76	2.67	3.01
Altona Algorithms 2019	Final	12	2.98		5.21		6.50	6.76	5.27	2.98	3.86
	Second round	10	1.97		3.56		2.96	4.92	1.97	4.57	3.14
	First round	13	2.07		4.00		3.97	DNF	2.07	3.90	4.12
WCA World Championship 2019	Second round	183	4.65		5.52		4.65	6.07	5.50	6.92	5.00
	First round	193	2.76		4.22		3.67	8.05	3.57	5.42	2.76
Koalafication Melbourne 2019	Second round	28	3.13		4.42		4.99	3.13	4.89	3.39	5.67
	First round	18	2.56		3.65		4.96	2.56	3.51	3.55	3.88
Hong Kong Cube Day 2019	Second round	12	3.00		3.82		3.24	4.06	4.30	3.00	4.15
	First round	11	2.36		3.98		3.99	4.89	3.66	4.30	2.36
Australian Nationals 2018	Second round	26	2.43		4.22		4.26	2.43	5.52	10.85	2.88
	First round	18	2.56		3.63		4.44	15.37	2.56	2.64	3.82
Hong Kong Open 2017	Final	14	3.30		4.73		5.04	4.67	3.30	4.47	5.39
	First round	13	2.30		4.65		5.30	2.30	4.50	6.54	4.15
4x4x4 Cube
On the Side South Australia 2024	Final	5	29.47		41.90		43.07	42.99	39.63	29.47	46.05
Adelaide Summer 2024	Final	7	35.67		43.47		45.83	41.73	45.00	35.67	43.68
	First round	5	34.85		39.61		38.23	34.85	39.87	41.81	40.73
South Australian Open 2023	Final	4	39.01		42.21		41.82	49.80	45.58	39.24	39.01
On the Side South Australia 2023	Final	4	41.43		41.85		41.98	41.87	41.69	43.56	41.43
Clare Valley Cubing 2022	Final	2	37.81		40.96		39.07	39.44	44.36	46.50	37.81
Adelaide Autumn 2022	Final	1	32.43		37.08		43.17	32.43	43.39	34.09	33.97
SA State Championship 2021	Final	1	38.66		40.47		41.43	39.77	40.41	41.24	38.66
	First round	1	35.27		39.43		35.27	42.56	37.97	37.96	42.36
Adelaide Twin Sunday 2021	Final	1	40.06		42.40		49.74	40.06	40.15	42.45	44.59
	First round	4	38.50		46.20		43.67	38.50	40.24	54.70	54.84
Altona Algorithms 2019	Final	11	39.40		43.68		43.42	39.40	45.70	42.19	45.44
	Second round	9	35.08		43.74		35.08	42.67	46.76	41.79	56.55
	First round	7	40.31		41.59		41.39	41.72	45.89	41.66	40.31
WCA World Championship 2019	First round	251	37.33		48.04		49.20	46.85	37.33	48.06	49.28
Koalafication Melbourne 2019	First round	14	33.93		44.86		43.18	45.71	45.68	33.93	1:09.16
Hong Kong Cube Day 2019	First round	22	41.25		47.67		53.42	42.01	41.25	47.59	58.36
Australian Nationals 2018	Second round	23	40.88		47.11		49.65	47.25	46.46	47.63	40.88
	First round	27	39.61		48.48		39.61	46.09	50.33	49.01	50.75
Hong Kong Open 2017	First round	33	54.51		55.85		54.51	55.70	58.29	57.22	54.64
5x5x5 Cube
Adelaide Summer 2024	Final	4	1:15.97		1:17.61		1:16.13	1:19.50	1:17.71	1:19.00	1:15.97
	First round	3	1:09.84		1:15.07		1:15.89	1:38.60	1:09.84	1:19.37	1:09.95
South Australian Open 2023	Final	2	1:09.83		1:12.02		1:10.27	1:09.83	1:22.25	1:13.00	1:12.80
Clare Valley Cubing 2022	Final	1	1:12.31		1:17.02		1:20.00	1:20.69	1:15.79	1:15.26	1:12.31
SA State Championship 2021	Final	4	1:12.81		1:25.44		1:33.90	1:12.81	1:31.97	1:20.02	1:24.32
Altona Algorithms 2019	Final	5	1:08.38		1:14.55		1:13.89	1:20.97	1:08.38	1:14.02	1:15.73
	First round	6	1:09.28		1:22.43		1:09.28	1:19.06	1:28.40	1:28.28	1:19.95
WCA World Championship 2019	First round	181	1:19.74		1:24.89		1:22.47	1:19.74	1:29.66	1:35.99	1:22.55
Koalafication Melbourne 2019	First round	12	1:18.10		1:25.77		1:24.44	1:37.88	1:28.78	1:18.10	1:24.08
Australian Nationals 2018	First round	16	1:22.94		1:30.40		1:22.94	1:26.42	1:36.57	1:36.79	1:28.22
6x6x6 Cube
On the Side South Australia 2024	Final	3	2:09.62		2:19.20		2:24.95	2:23.04	2:09.62
South Australian Open 2023	Final	1	2:14.72		2:23.16		2:34.24	2:20.51	2:14.72
On the Side South Australia 2023	Final	4	2:18.57		2:37.64		3:02.22	2:18.57	2:32.12
South Australian Open 2022	Final	2	2:17.12		2:22.15		2:18.05	2:31.29	2:17.12
SA State Championship 2021	Final	1	2:16.44		2:21.07		2:17.22	2:29.55	2:16.44
Altona Algorithms 2019	Final	8	2:41.79		3:02.09		2:41.79	3:28.97	2:55.50
WCA World Championship 2019	First round	152	2:47.20		2:59.65		2:47.20	3:09.11	3:02.65
Koalafication Melbourne 2019	Final	7	2:29.35		2:44.91		2:52.23	2:53.14	2:29.35
Australian Nationals 2018	First round	18	3:00.18		3:02.97		3:03.28	3:00.18	3:05.45
7x7x7 Cube
On the Side South Australia 2024	Final	2	3:28.86		3:41.97		3:42.23	3:28.86	3:54.82
South Australian Open 2023	Final	3	3:37.97		4:12.74		3:37.97	4:53.50	4:06.74
On the Side South Australia 2023	Final	2	3:48.15		3:48.92		3:48.24	3:48.15	3:50.36
South Australian Open 2022	Final	2	3:25.68		3:42.47		3:25.68	3:41.08	4:00.64
SA State Championship 2021	Final	1	3:30.13		3:48.26		3:50.35	4:04.29	3:30.13
WCA World Championship 2019	First round	127	4:07.60				4:07.60
Koalafication Melbourne 2019	Final	11	4:25.57		4:31.56		4:25.57	4:37.19	4:31.93
Australian Nationals 2018	First round	13	4:39.92		4:51.31		4:55.90	4:39.92	4:58.11
3x3x3 Blindfolded
On the Side South Australia 2024	Final	13	DNF		DNF		DNF	DNF	DNF
Adelaide Summer 2024	Final	4	2:21.24		DNF		2:21.24	3:11.10	DNF
	First round	8	2:52.61		DNF		DNF	DNF	2:52.61
On the Side South Australia 2023	Final	4	2:05.02		DNF		2:35.81	2:05.02	DNF
South Australian Open 2022	Final	12	DNF		DNF		DNF	DNF	DNF
SA State Championship 2021	Final	4	DNF		DNF		DNF	DNF	DNF
Altona Algorithms 2019	First round	12	3:03.07		DNF		DNF	DNF	3:03.07
Koalafication Melbourne 2019	First round	23	DNF		DNF		DNF	DNF	DNF
Hong Kong Cube Day 2019	Final	6	DNF		DNF		DNF	DNF	DNF
Australian Nationals 2018	First round	21	5:06.24		DNF		5:06.24	DNF	DNS
3x3x3 Fewest Moves
Half Turns in Hallett Cove 2024	Final	7	26		DNF		37	DNF	26
On the Side South Australia 2023	Final	3	32		34.67		38	32	34
Australian Nationals FMC 2022	Final	16	34		40.00		40	46	34
SA State Championship 2021	Final	6	DNF				DNF
Australian Nationals 2018	Final	5	39				39
3x3x3 One-Handed
Adelaide Summer 2024	Final	5	15.89		17.35		15.89	17.77	22.62	17.45	16.84
	First round	6	14.78		19.19		20.14	25.65	19.23	14.78	18.20
South Australian Open 2023	Final	6	18.13		22.42		22.79	22.86	21.60	23.09	18.13
	First round	7	16.13		22.49		25.28	18.40	31.76	23.80	16.13
On the Side South Australia 2023	Final	3	16.33		18.76		27.21	16.33	20.66	16.82	18.79
	First round	5	17.75		20.93		28.03	18.57	17.75	23.37	20.85
Clare Valley Cubing 2022	Final	3	18.90		22.22		22.84	18.90	24.34	20.45	23.37
SA State Championship 2021	Final	4	16.26		19.31		22.24	18.78	18.69	16.26	20.47
	First round	4	19.98		22.25		23.75	24.99	21.82	19.98	21.19
Altona Algorithms 2019	First round	13	18.50		21.93		18.50	19.54	20.82	25.42	28.56
WCA World Championship 2019	First round	236	21.02		24.41		25.92	26.25	28.96	21.07	21.02
Koalafication Melbourne 2019	First round	19	19.77		24.06		19.77	26.41	22.90	25.89	23.38
Hong Kong Cube Day 2019	First round	24	19.02		23.66		19.77	19.02	47.61	19.64	31.58
Australian Nationals 2018	Second round	23	18.14		22.74		20.01	28.78	19.56	28.64	18.14
	First round	32	19.30		24.77		22.35	24.35	19.30	37.60	27.61
Clock
On the Side South Australia 2024	Final	16	11.09		15.73		DNF	16.17	15.58	15.43	11.09
On the Side South Australia 2023	Final	14	12.90		16.23		12.90	14.19	DNF	17.07	17.43
South Australian Open 2022	Final	5	12.47		13.57		14.33	13.47	12.47	12.90	14.37
SA State Championship 2021	Final	4	11.82		14.43		13.65	18.34	15.09	14.54	11.82
Altona Algorithms 2019	Final	7	12.28		12.71		12.28	12.29	13.07	13.67	12.76
Koalafication Melbourne 2019	Final	8	12.70		14.70		13.61	16.16	12.70	DNF	14.32
Hong Kong Cube Day 2019	Final	17	21.98		DNF		DNF	21.98	DNF	22.31	DNF
Megaminx
On the Side South Australia 2024	Final	6	1:17.98		1:22.79		1:19.04	1:33.95	1:29.61	1:19.71	1:17.98
South Australian Open 2023	Final	4	1:13.93		1:19.82		1:27.36	1:26.38	1:13.93	1:14.10	1:18.97
Adelaide Winter Sunday 2023	Final	4	1:18.05		1:21.61		1:18.05	1:23.38	1:36.64	1:23.19	1:18.25
On the Side South Australia 2023	Final	4	1:15.28		1:20.01		1:15.75	1:23.97	1:22.45	1:15.28	1:21.82
South Australian Open 2022	Final	2	1:04.30		1:08.82		1:11.76	1:14.75	1:07.50	1:04.30	1:07.20
SA State Championship 2021	Final	1	1:20.50		1:26.47		1:33.41	1:22.68	1:27.48	1:29.26	1:20.50
WCA World Championship 2019	First round	141	1:18.42		1:24.63		1:26.80	1:22.66	1:46.01	1:18.42	1:24.44
Koalafication Melbourne 2019	Final	10	1:19.15		1:28.74		DNF	1:28.28	1:19.15	1:37.61	1:20.33
Hong Kong Cube Day 2019	Final	11	1:20.32		1:29.61		1:36.12	1:20.32	1:42.25	1:21.14	1:31.57
Australian Nationals 2018	Final	19	1:28.29		1:39.17		1:53.22	1:28.29	1:34.48	1:38.82	1:44.22
Pyraminx
Adelaide Summer 2024	First round	16	6.27		7.93		7.74	8.92	7.12	6.27	9.73
South Australian Open 2023	First round	31	8.59		10.18		10.28	8.88	8.59	13.62	11.37
Adelaide Winter Sunday 2023	Final	9	5.72		8.39		8.84	5.72	8.03	8.31	9.27
	First round	10	6.78		8.15		6.78	7.51	6.96	9.99	11.02
South Australian Open 2022	First round	17	7.28		8.71		13.06	7.81	7.28	10.16	8.16
Adelaide Autumn 2022	Final	7	5.80		6.95		7.34	5.80	9.06	6.06	7.44
	First round	9	4.16		7.37		4.16	7.04	6.80	8.26	15.68
SA State Championship 2021	Final	4	5.85		6.71		9.34	7.21	6.59	5.85	6.33
	First round	5	5.70		7.77		5.70	8.12	6.65	10.38	8.53
Adelaide Twin Sunday 2021	Final	4	6.81		7.64		7.50	16.42	8.19	7.23	6.81
	Second round	4	5.55		7.19		7.23	8.98	5.55	8.05	6.30
	First round	9	6.82		9.83		10.77	6.82	9.08	11.29	9.65
Altona Algorithms 2019	First round	31	6.73		7.96		8.09	6.73	7.40	9.01	8.38
WCA World Championship 2019	First round	148	4.93		6.79		7.67	7.35	4.93	5.36	8.91
Koalafication Melbourne 2019	First round	27	4.68		8.80		9.48	10.85	4.68	8.38	8.54
Hong Kong Cube Day 2019	Final	15	5.05		6.60		9.69	5.91	5.05	7.35	6.53
Skewb
South Australian Open 2023	First round	21	8.03		10.75		8.03	8.40	15.01	DNF	8.85
Adelaide Winter Sunday 2023	Final	10	6.24		7.75		6.99	6.24	8.68	8.76	7.58
	First round	10	5.08		8.34		46.40	5.08	9.34	7.84	7.83
Clare Valley Cubing 2022	Final	4	4.87		6.63		10.58	7.41	4.87	5.29	7.19
	First round	8	8.78		10.30		10.06	11.30	12.22	8.78	9.55
SA State Championship 2021	Final	3	4.92		7.79		4.92	8.61	8.24	6.51	8.62
	First round	3	4.72		8.35		8.65	8.38	8.36	8.31	4.72
Adelaide Twin Sunday 2021	Final	4	5.08		9.61		10.28	DNF	5.08	8.00	10.56
Altona Algorithms 2019	Final	7	4.98		7.19		21.02	7.18	8.00	4.98	6.40
	First round	10	4.52		6.39		7.46	5.83	5.89	8.13	4.52
WCA World Championship 2019	First round	144	5.37		7.22		5.58	5.37	11.77	7.34	8.74
Koalafication Melbourne 2019	First round	22	7.39		8.53		14.44	7.39	9.21	8.79	7.59
Hong Kong Cube Day 2019	Final	15	6.23		7.43		7.95	6.71	6.23	7.63	9.62
Australian Nationals 2018	Second round	14	3.94		6.43		6.77	6.35	3.94	6.18	DNF
	First round	24	5.89		6.94		6.40	5.89	10.80	6.77	7.66
Square-1
Half Turns in Hallett Cove 2024	Final	1	7.41		9.88		10.15	10.84	8.65	7.41	11.82
On the Side South Australia 2024	Final	1	8.63		11.26		12.25	8.63	15.25	11.27	10.25
	First round	1	6.81		10.09		8.84	13.50	12.41	6.81	9.03
South Australian Open 2023	Final	1	7.82		8.58		8.79	7.82	7.90	9.15	9.06
Adelaide Winter Sunday 2023	Final	1	7.79		10.87		7.79	15.43	8.22	DNF	8.95
On the Side South Australia 2023	Final	1	8.78		10.74		11.04	11.75	8.78	21.61	9.43
	First round	1	8.99		12.29		11.28	8.99	15.03	10.56	15.18
South Australian Open 2022	Final	1	8.94		9.11		9.01	9.12	13.73	8.94	9.19
Adelaide Autumn 2022	Final	1	8.11		8.87	NR	8.41	8.11	11.03	9.75	8.44
SA State Championship 2021	Final	1	10.68		13.50		12.83	10.68	16.77	14.14	13.54
Adelaide Twin Sunday 2021	Final	1	9.94		11.65		10.24	9.94	10.44	DNF	14.28
Altona Algorithms 2019	Final	2	8.69		9.38	NR	9.97	11.14	9.40	8.76	8.69
	First round	5	10.05		13.79		13.97	22.01	16.09	10.05	11.31
WCA World Championship 2019	Second round	30	10.80		12.39		18.13	13.99	10.80	11.70	11.48
	First round	17	8.93		11.36		8.93	11.83	10.18	12.08	13.52
Koalafication Melbourne 2019	Final	1	8.05	NR	9.85	NR	10.49	9.50	9.83	10.22	8.05
	First round	6	11.98		12.55		11.98	12.76	14.45	12.69	12.20
Hong Kong Cube Day 2019	Final	2	11.32		14.53		11.32	16.03	14.53	13.04	DNF
Australian Nationals 2018	Final	5	8.94	NR	11.68	NR	10.66	13.53	18.98	10.86	8.94
	First round	8	12.61		14.01	NR	12.61	13.98	19.89	15.40	12.66
Hong Kong Open 2017	Final	8	18.66		21.50		23.96	20.13	20.62	23.76	18.66
3x3x3 Multi-Blind
On the Side South Australia 2024	Final	8	DNF				DNF
On the Side South Australia 2023	Final	8	DNF				DNF
South Australian Open 2022	Final	6	DNF				DNF
SA State Championship 2021	Final	1	DNF				DNF
Altona Algorithms 2019	Final	12	2/3 20:23				2/3 20:23
Koalafication Melbourne 2019	Final	11	DNF				DNF

History of National Records

Single	Average	Competition	Round	Solves
Square-1
	8.87	Adelaide Autumn 2022	Final	8.41	8.11	11.03	9.75	8.44
	9.38	Altona Algorithms 2019	Final	9.97	11.14	9.40	8.76	8.69
8.05	9.85	Koalafication Melbourne 2019	Final	10.49	9.50	9.83	10.22	8.05
8.94	11.68	Australian Nationals 2018	Final	10.66	13.53	18.98	10.86	8.94
	14.01	Australian Nationals 2018	First round	12.61	13.98	19.89	15.40	12.66