Reverse engineering comic xkcd

About a week ago, Randall Munro published the Frequency comic, in which various inscriptions blink with a frequency that roughly corresponds to the frequency of these events in the real world: birth, death, heartbeat, wedding, someone breaks the iPhone screen, a European resident kisses, etc. d. A beautiful throbbing picture actually consists of 50 animated GIF files.

One of the lovers of creativity Munro wondered : how long does it take a full cycle for all frames? To do this, he downloaded the GIF files, wrote his own GIF parser - and fixed the cycle of each file. The results are shown in the table below: the planned cycle in seconds, the planned number of impressions per hour, the real cycle in seconds and the actual number of impressions per hour.

For 21 pictures, the planned figure differs from the real one, because no modern browser supports frame delay of less than 0.02 s. If this occurs, the browser simply replaces the delay by 0.1 s.

	loop_seconds	per_hour	needs_adj	loop_seconds_adj	per_hour_adj
name
birth	0.24	15000.00	*	0.34	10588.24
death	0.56	6428.57	*	0.66	5454.55
domain	0.64	5625.00	*	0.74	4864.86
wikipedia	0.67	5373.13	*	0.77	4675.32
wedding	0.75	4800.00	*	0.85	4235.29
shark	0.83	4337.35	*	0.93	3870.97
heartbeat	0.86	4186.05	*	0.96	3750.00
turnsignal2	0.90	4000.00	*	1.00	3600.00
iphone	0.93	3870.97	*	1.03	3495.15
flight	0.93	3870.97	*	1.03	3495.15
turnsignal1	0.94	3829.79	*	1.04	3461.54
car_elsewhere	1.03	3495.15	*	1.13	3185.84
phoenixshoes	1.08	3333.33	*	1.18	3050.85
meteor	1.15	3130.43	*	1.25	2880.00
littleleague	1.23	2926.83	*	1.33	2706.77
bottles	1.27	2834.65	*	1.37	2627.74
denverpizza	1.27	2834.65	*	1.37	2627.74
ndsex	1.38	2608.70	*	1.48	2432.43
pulsar	1.40	2571.43	*	1.50	2400.00
cat_mockingbird	1.82	1978.02	*	1.92	1875.00
car_china	1.89	1904.76	*	1.99	1809.05
phoenix	2.05	1756.10		2.05	1756.10
tattoo	2.06	1747.57		2.06	1747.57
earthquake1	2.43	1481.48		2.43	1481.48
keys	2.43	1481.48		2.43	1481.48
eagle	2.69	1338.29		2.69	1338.29
vibrator	2.99	1204.01		2.99	1204.01
car_japan	4.01	897.76		4.01	897.76
facebook	4.32	833.33		4.32	833.33
recycled	4.64	775.86		4.64	775.86
bieber	4.73	761.10		4.73	761.10
kiss	5.53	650.99		5.53	650.99
car_germany	5.80	620.69		5.80	620.69
house	6.22	578.78		6.22	578.78
car_us	6.95	517.99		6.95	517.99
dogbite	7.01	513.55		7.01	513.55
amelia	7.79	462.13		7.79	462.13
parliament_toilet	10.06	357.85		10.06	357.85
dog	15.60	230.77		15.60	230.77
us_cancer	18.99	189.57		18.99	189.57
cat	21.30	169.01		21.30	169.01
fire_dept	23.00	156.52		23.00	156.52
earthquake2	24.26	148.39		24.26	148.39
bike	24.93	144.40		24.93	144.40
book_mockingbird	42.05	85.61		42.05	85.61
us_cancer_death	54.34	66.25		54.34	66.25
holeinone	180.00	20.00		180.00	20.00
earthquake3	242.60	14.84		242.60	14.84
earthquake4	2426.00	1.48		2426.00	1.48
oldfaithful	5640.00	0.64		5640.00	0.64