THEORETICAL DEPTH AT ALTITUDE - IMPERIAL (OLD VERSION)
Actual
Depth	Theoretical Depth at Various Altitudes (in feet)
	1000	2000	3000	4000	5000	6000	7000	8000	9000	10,000
0	0	0	0	0	0	0	0	0	0	0
10	10	11	11	12	12	12	13	13	14	15
20	21	22	22	23	24	25	26	27	28	29
30	31	32	33	35	36	37	39	40	42	44
40	41	43	45	46	48	50	52	54	56	58
50	52	54	56	58	60	62	65	67	70	73
60	62	65	67	69	72	75	78	81	84	87
70	73	75	78	81	84	87	91	94	98	102
80	83	86	89	93	96	100	104	108	112	116
90	93	97	100	104	108	112	117	121	126	131
100	104	108	112	116	120	125	130	135	140	145
110	114	118	123	127	132	137	143	148	154	160
120	124	129	134	139	144	150	156	162	168	174
130	135	140	145	151	156	162	168	175	182	189
Stop
Depth	Safety/Emergency Decompression Stop Depth
	1000	2000	3000	4000	5000	6000	7000	8000	9000	10,000
15	14	14	13	13	12	12	12	11	11	10