Son of Doctor Esker's Notebook (The Sequel)

Hint
Small #1	311	596	402	368	331	197	394	383	142	297
Small #2	309	615	405	381	320	159	386	395	150	280
Small #3	275	600	374	389	334	147	376	385	137	268
Medium #1	310	626	373	385	281	136	379	419	138	284
Medium #2	290	604	320	370	279	137	344	418	128	291
Medium #3	295	618	283	365	226	129	326	422	129	261
Large #1	253	675	294	403	199	148	314	425	142	301
Large #2	234	637	261	402	236	143	276	404	130	284
Large #3	217	521	276	310	209	191	301	409	139	336

Return of Doctor Esker's Notebook (The Other Sequel)

Hint
Small #1	102	148	137	62	134	95	66	87	128	96
Small #2	96	141	134	57	138	90	64	84	125	96
Small #3	93	146	135	56	132	79	62	86	117	102
Medium #1	94	142	143	67	137	84	68	88	141	99
Medium #2	93	137	151	64	132	81	76	83	134	87
Medium #3	95	137	150	67	128	73	65	86	119	91
Large #1	93	142	167	74	140	70	65	88	93	108
Large #2	57	126	138	72	156	61	77	84	86	116
Large #3	57	131	133	89	130	63	64	60	61	111

Doctor Esker's Notebook IV: The Moroccan Affair
(The Other Other Sequel)

Hint
Small #1	15	9	12	33	24	32	19	35	48	11
Small #2	14	8	12	28	23	28	17	32	36	10
Small #3	13	8	12	31	22	38	16	34	41	12
Medium #1	13	9	12	33	22	35	19	34	40	13
Medium #2	11	7	11	32	21	23	17	32	41	7
Medium #3	8	7	14	25	20	21	18	30	43	7
Large #1	7	7	14	24	18	25	14	30	34	11
Large #2	5	7	14	20	14	18	12	29	23	10
Large #3	8	9	11	23	12	19	15	25	20	20

The hints are sorted by how much help they give you.
The last Large Hint on each page comes very close to just giving you the solution.