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Dew Point vs. Parts per Million*

Dewpoint
°F	°C	ppm
-130	-90	0.1
-120	-84	0.25
-110	-79	0.63
-105	-76	1
-104	-76	1.08
-103	-75	1.18
-102	-74	1.29
-101	-74	1.4
-100	-73	1.53
-99	-73	1.66
-98	-72	1.81
-97	-72	1.96
-96	-71	2.15
-95	-71	2.35
-94	-70	2.54
-93	-69	2.76
-92	-69	3
-91	-68	3.28
-90	-68	3.53
-89	-67	3.84
-88	-67	4.15
-87	-66	4.5
-86	-66	4.78
-85	-65	5.3
-84	-64	5.7
-83	-64	6.2
-82	-63	6.6
-81	-63	7.2
-80	-62	7.8
-79	-62	8.4
-78	-61	9.1
-77	-61	9.8
-76	-60	10.5
-75	-59	11.4
-74	-59	12.3

Dewpoint
°F	°C	ppm
-73	-58	13.3
-72	-58	14.3
-71	-57	15.4
-70	-57	16.6
-69	-56	17.9
-68	-56	19.2
-67	-55	20.6
-66	-54	22.1
-65	-54	23.6
-64	-53	25.6
-63	-53	27.5
-62	-52	29.4
-61	-52	31.7
-60	-51	34
-59	-51	36.5
-58	-50	39
-57	-49	41.8
-56	-49	44.6
-55	-48	48
-54	-48	51
-53	-47	55
-52	-47	59
-51	-46	62
-50	-46	67
-49	-45	72
-48	-44	76
-47	-44	82
-46	-43	87
-45	-42.8	92
-44	-42.2	98
-43	-41.7	105
-42	-41.1	113
-41	-40.6	119
-40	-40	128
-39	-39.4	136

Dewpoint
°F	°C	ppm
-38	-38.9	144
-37	-38.3	153
-36	-37.8	164
-35	-37.2	174
-34	-36.7	185
-33	-36.1	196
-32	-35.6	210
-31	-35	222
-30	-34.4	235
-29	-33.9	250
-28	-33.3	265
-27	-32.8	283
-26	-32.2	300
-25	-31.7	317
-24	-31.1	338
-23	-30.6	358
-22	-30	378
-21	-29.5	400
-20	-28.9	422
-19	-28.4	448
-18	-27.8	475
-17	-27.2	500
-16	-26.7	530
-15	-26.1	560
-14	-25.6	590
-13	-25	630
-12	-24.4	660
-11	-23.9	700
-10	-23.3	740
-9	-22.8	780
-8	-22.2	820
-7	-21.7	870
-6	-21.1	920
-5	-20.6	970
-4	-20	1,020

* @ 760 Torr

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