Appendix 1 = 1 - 0.25
(1.8) (1.0) (0.74)] = 1 - 0.19 = 0.81 = 81% INSTALLATION OF A FILTER WHICH REMOVED 81 PERCENT OF THE OZONE ENTERING THE CABIN • I A PA 12 BE TE WE GET CHOOS IN ON.
WOULD ENABLE AN AIRPLANE TO SHOW COMPLIANCE WITH THE MAXIMUM CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 12] UNDER THE WORST CASE CONDITIONS (ANY POINT ALONG ANY FLIGHT ROUTE).
Type 3 - Example to determine the maximum flight altitude allowed to show compliance at a point along a flight route with the maximum cabin ozone concentration. Equation 2 can be rewritten to determine oz16, the ambient ozone concentration derived from statistics with a confidence of 84 percent.
oz16 OZMAX (Equation 5) _(0.62) (1-E)) For OZMAX = 0.25 ppmv and no filter E = 0, Equation 5 becomes:
OZ16 = (0.25) _(0.62)J = 0.40 ppmv
(1) Case 1. Latitude: 50° North For this case, page 16 of this appendix (Page A-15 of the ozonesonde statistics) shows the Ozl6 value of 0.40 ppmv occurs for flight level 340. (This value is determined by straight line interpolation between the Ozl6 values of 0.35 ppmv and
0.45 ppmv occurring at flight levels 330 and 350, respectively. The use of straight line interpolation is pennissible where appropriate.)
THIS POINT ALONG THE FLIGHT WOULD HAVE TO BE FLOWN AT OR BELOW 34,000 FEET TO SHOW COMPLIANCE WITH THE MAXIMUM CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
(2) Case 2. Latitude: 40° North For this case, page 17 of this appendix (page A-16 of the ozonesonde statistics) shows the oz16 value of 0.40 ppmv occurs for flight level 370.
THIS POINT ALONG THE FLIGHT WOULD HAVE TO BE FLOWN AT OR BELOW 37,00 FEET TO SHOW COMPLIANCE WITH THE MAXIMUM CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
d. Variation of Type 3. The example shown for Type 3 can be extended to show compliance with the maxinum cabin ozone concentration established by FAR Part 121 at any latitude for any month of the year. One example of such a determination is shown in Figure 2 for an airplane flying in eastern North America with R = 0.8, E = 0, and a cabin altitude of 7,000 feet (which, like the Type 3 example, gives a required OZ16 of 0.40 ppmv).
Appendix 1 Examples - Time-Weighted Average (IWA) Cabin Ozone Concentration (.1 ppmv, SLE).
To determine the TWA cabin ozone concentration, the OZl6 values are used to ensure that the ozone statistics are known with an 84 percent confidence value for any one flight (the 50 percent value would only give a confidence value of 50 percent that a flight would meet the required ozone concentration standard).,
a. The IWA cabin ozone concentration using ozone statistics is given by Equation 6 which is similar to Equation 1 with time weighted Oz16 values for flight segments at constant latitude and altitude in the same geographic area.
OZ16 = (1-E) (R) (P/PO) (O216) i "i/IFS (Equation 6) WHERE: N is the number of individual flight segments at a constant latitude and tele at santane fatual and fuse in the sane gentape e flight NOTE: Fi = 718 i=l (Oz16) i is the ambient ozone concentration obtained from the ozone statistics with a confidence level of 84 percent which is estimated to be encountered during the tine period, Ti In all the example types shown, the following values are assumed: R = 0.8 and ₽/Po = 0.77. Equation 6 then can be written as:
OZIWA = (0.8) (0.77) (1-E) (10226) (51/755) OZIWA = (0.62) (1-E) (OZ16) ¡ (T¡/IFS) (Equation 7) i=l
b. Type 1 - Example to determine if a flight is in compliance with the IWA cabin ozone concentration. For all Type 1 examples, assume the following:
month is February, the flight level is 370, no filter (or F-0), and the flight segment (IFs) is 5 hours. Two hours are flown in the eastern North American region (ENAR) and two hours are flown in the western North American region (WNAR) above flight level 180.
(1) Case 1. Latitude: 50° North Pages A-15 and A-12 of the ozonesonde statistics (Figure 1 of this advisory circular) give OZ16 = 0.50 ppnv for the ENAR and OZ16 = 0.25 ppmv for the WAR.
Therefore, from Equation 7:
OZIWA = (0.62) (0.50 x 2 + 0.25 x 2) = 0.19 pm 6
Appendix 1
THIS FLIGHT WOULD NOT HAVE DEMONSTRATED COMPLIANCE WITH THE MAXIMUM TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
(2) Case 2. Latitude: 40° North Pages A-16 and A-13 of the ozonesonde statistics (Figure 1 of this advisory circular) give OZ16 = 0.40 ppmv for the ENAR and OZ16 = 0.50 ppmv for the WAR.
Therefore:
OZIWA = (0.62) (0.40 × 2 + 0.50 x 2) = 0.22 pm
THIS FLIGHT WOULD NOT HAVE DEMONSTRATED COMPLIANCE WITH THE MAXIMUM TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
(3) Case 3. Latitude: 30° North Figure 1 of this advisory circular (page A-16 and interpolation between pages A-16 and A-11 of the ozonesonde statistics) gives Oz16 = 0.12 ppmv for the ENAR and OZ16 = 0.10 ppmv for the WAR. Therefore:
OZIWA = (0.62) (0.12 x 2 + 0.10 × 2) = 0.05 pm
THIS FLIGHT WOULD HAVE DEMONSTRATED COMPLIANCE WITH THE MAXIMUM TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
c. Type 2 - Example to determine the filter efficiency required to show compliance with the IWA cabin ozone concentration. Equation 7 can be rewritten to determine E, the filter efficiency:
(OZIWA) (IpS) (Equation 8)
(0.62) (0Z16) ¡(Ti) _i=l For OZMAX = 0.1 ppmv and the flight conditions of the example Type 1, Equation 8 becomes: E = 1 - (0.1) (5) /10.62) 12 × (0216) 1 + 2 × (0216)2 = 1 - (0.40) (Equation 9) ((0216)1 + (0216)2
(1) Case 1. Latitude: 50° North OZ16 is 0.50 pm for ENAR and 0.25 ppmv for WAR. (see Type 1, Case 1) E = 1 - L10.50 + 0.25) 1(0.40) = 1 - 0.53 = 0.47 = 47%
Appendix 1 INSTALLATION OF A FILTER WHICH REMOVES 47 PERCENT OF THE OZONE ENTERING THE CABIN
WOULD ENABLE THIS FLIGHT TO SHOW COMPLIANCE WITH THE TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
(2) Case 2. Latitude: 40° North OZ16 = 0.40 pm for ENAR and 0.50 pm for WAR. (see Type 1, Case 2) E = 1 -| (0.40) [(0.40 + 0.50)] = 1 - 0.44 = 0.56 = 56₴ INSTALLATION OF A FILTER WHICH REMOVES 56 PERCENT OF THE OZONE ENTERING THE CABIN
WOULD ENABLE THIS FLIGHT TO SHOW COMPLIANCE WITH THE TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
(3) Case 3. Latitude: 30° North
NO FILTER REQUIRED AS COMPLIANCE WITH THE TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121 WAS SHOWN DURING EXAMPLE TYPE 1, CASE 3.
d. Variation of Type 2. The filter efficiency required for an airplane to show compliance with the TWA cabin ozone concentration for the worst case can be determined using the method of the Type 2 example. For a worst case analysis, the assumptions are the same as were used for the worst case analysis for the maximum ozone concentration example.
P/Po = 0.74 ppmv R = 1.0 Flight Level is 450 OZ16 = 1.8 ppmv In addition, the total flight segment time (IFs) is 14 hours, Equation 6 can be rewritten as:
E = 1 - (OZTWA) (IFS) (OZ16) (R) (P/PO) (TES - 1).
= 1 (0.1) (14) 1(1.8) (1.0) (0.74) (13)] = 1 - 0.08 = 0.92 = 92% INSTALLATION OF A FILTER WHICH REMOVES 92 PERCENT OF THE OZONE ENTERING THE CABIN
WOULD ENABLE AN AIRPLANE TO SHOW COMPLIANCE WITH THE TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121 UNDER THE WORST CASE CONDITIONS.
Type 3 - Example to determine the maximum flight altitude allowed to show compliance with the IVA cabin ozone concentration. Equation 7 can be rewritten to
Appendix 1 determine ozl6, the ambient ozone concentration derived from statistics with a confidence of 84 percent.
(OZ16)](T1) (TI) + (I2) = (OZIWA) (Ips) (0.62) (1-E) For OZIWA = 0.10 ppmv, no filter (E=0), and a total flight segment of 5 hours, with 2 hours above 18,000 feet in both the ENAR and WAR, Equation 10 becomes:
(0216) 1 + (0216) 2 = (0.10) (5) 0.40 ppmv [(0.62) (2)]
(1) Case 1. Latitude: 50° North For this case, pages A-12 and A-15 of the ozonesonde statistics show that 0216) 1 † (OZ16) 2 equals 0.51 ppmv at flight level 330 and 0.34 ppmv at flight Linear interpolation shows a value of 0.40 ppmv occurs for a flight level of 316.
THIS EXAMPLE FLIGHT WOULD HAVE TO FLY AT OR BELOW 31,600 FEET TO SHOW COMPLIANCE WITH THE TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
(2) Case 2. Latitude: 40° North For this case, pages A-13 and A-16 of the ozonesonde statistics show that (OZ16)] + (OZ16)2 equals 0.55 ppmv at a flight level of 330 and 0.38 ppmv at a flight level of 310. Linear interpolation shows a value of 0.40 ppmv occurs tor a flight level of 312.
THIS EXAMPLE FLIGHT WOULD HAVE TO FLY AT OR BELOW 31,200 FEET TO SHOW COMPLIANCE WITH THE TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
(3) Case 3. Latitude: 30° North For this case, use of data on pages A-ll and A-16 of the ozonesonde statistics, interpolated as described in paragraph 2i of this appendix, shows (0216)1 + (0216) 2 equals 0.63 pmv at a flight level of 470 and 0.37 ppmv at a flight level of 450. Linear interpolation shows a value of 0.40 opmv occurs for a flight level of 452.
THIS EXAMPLE FLIGHT WOULD HAVE TO FLY AT OR BELOW 45,200 FEET TO SHOW COMPLIANCE WITH THE TWA CABIN OZONE CONCENTRATION ESTABLISHED BY FAR PART 121.
Legend Appendix 1 AC 120- 38 Balloon Ozonesonde Data — Interpolated Data Longitude 120E 140E 160E 180E 160W 140W 120W 100W 80W G0W 40W 20W 20E 40E 80- 1.3,1.0..90l 75 Balloon Ozonesonde Data 70 65 Balloon Ozonesonde 2,90.800 ,:90,.80 Balloon Ozonesonde Data 60 Data 90,.70,.60 1.0,.80, 520 55 50 .50,.35,.25. .70,.55,.45 90, 80,. .60,.50 .60 г •.90,.71,.61, .77,.61,.51 15. 8,61.51 45 11.0,.91,,80p.... ...73,,63,.55". 45,.35,.30- .65,.53,.43 59.60,41 40 571.63.551 66,.59,.53 60,.55,.50 40 .52,.44,.36 43,.38,.
35 30 1,08, 06,064, .38,.33,.291 .37,.29,.25 10,.08,.08/... 35,.25,.20- 12,.10,.10• .14, 12.12 40, 30,. 25 .34,.28,.24•. .28,.25, 25 .09, 09,.09 20 Interpolated .07,.07,.06.. Interpolated - Data 15 Data .06,.06,.06 10 1.01.06,.06 Figure 1. 0Z16 Values for February at flight levels 410, 390 and 370 obtained from 10/10/80 FAA Report FAA-EQ-78-03 with linear interpolation between regions.
Figure 2. Maximum flight level for an airplane flying in Eastern North America with R=0.8, E=0 (no filter) and a cabin altitude of 7,000 feet to show compliance with the maximum cabin ozone concentration (0.25 ppmv, SLE) established by FAR Part 121. FL350• FL370 10/10/80 FL390 FL370 FL350 FL330 FL330 FL390
SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG 70 380 360 350 340 330 315 310 310 300 320 330 390 70 65 390 370 370 350 330 310 317 310 310 320 340 390 65 60 400 390 370 360 340 323 323 310 310 320 350 400 60 FL410- 55 410 400 390 380 340 330 330 320 317 330 360 400 55 FL410 50 430 410 390 400 350 340 330 323 320 350 390 410 50 45 450 430 410 400 370 350 350 330 340 370 410 430 45 40 463 450 430 410 390 370 380 350 370 410 450 460 40 35 490 470 460 450 430 410 410 390 410 430 463 470 35 30 537 538 490 490 470 477 450 490 450 457 480 490 30 SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG Appendix 1 AC 120-38 Month of the Year 11
Appendix 1
FEBRUARY - JAPAN UNIT: PPMV PERCENTAGES INDICATE PROBABILITY OF EXCEEDING AMOUNT SHOWN.
43° N N=18 36°N N=18
FLIGHT FLIGHT LEVEL MEAN 16% 2% • 1% MAX MIN LEVEL MEAN 16% 2% •1% MAX MIN 590 2:1 2.9 304 400 1:₴ 590 104 2.0 2•5 3.1 2.7 570 2.6 3.2 3.7 3.2 570 1.3 1.8 204 2.9 2.5 • 60 550 1.8 2.3 2.9 3.5 3.0 550 1.1 1.6 2•2 2.7 2.3 • 40 530 2.0 2.6 3.2 530 1.4 1•9 2.5 2.0 • 20 510 1.3 1.9 204 2.9 2.5 510 • 8 1.2 1.7 2.2 ... • 18 490 1.2 1.7 2.1 2.6 2.2 • 55 490 • 65 1.0 104 1.8 • 16 470 1.1 1.8 2.2 1.9 • 50 470 • 50 • 8 1•1 • 14 450 • 9 1.2 1.5 1.8 1.5 • 50 450 • 35 • 55 • 10 430 • 8 1.1 1.3 1.6 1.3 • 40 430 • 30 • 45 •65 8 • 09 410 • 7 • 9 1.2 1.2 35 410 • 25 • 45 •60 • 8 • 08 390 • 60 • 8 1.0 1.3 25 390 •25 • 40 • 60 • 07 370 • 50 •7 • 9 • 9 • 20 370 •20 • 35 • 55 • 60 • 06 350 • 40 • 55 • 7 • 9 16 350 • 20 • 30 • 45 • 50 • 55 • 06 330 • 30 • 40 • 55 • 7 • 55 • 12 330 • 16 • 25 • 35 • 45 •45 • 05 310 • 18 • 25 • 35 • 45 • 35 • 06 310 • 12 • 20 • 30 • 35 • 35 • 05 290 • 12 • 18 • 25 • 30 • 25 • 04 290 • 10 • 16 •20 • 30 • 30 • 04 270 • 12 • 16 • 20 • 30 • 20 • 04 270 • 09 • 14 • 20 • 25 • 25 • 04 250 • 10 • 14 • 20 • 25 • 18 • 04 250 • 08 • 12 • 18 • 20 • 20 • 04 230 • 08 • 12 • 16 • 20 • 16 • 03 230 • 07 • 10 • 18 • 18 • 04 210 • 07 • 10 • 12 • 14 • 12 • 03 210 • 0 • 09 • 14 • 04 190 • 05 • 07 • 08 • 10 • 09 • 03 190 • 07 • 08 • 09 • 04 32°N N=14 FLIGHT LEVEL MEAN 16% 2* •1% MAX MIN 590 • 8 1.1 1•5 1.9 1.6 • 35 570 • 60 • 9 1.3 1.6 1.4 • 25 550 •45 1.0 1.3 1.1 • 18 530 510 •25 •25 • 50 • 45 • 60 • 9 • 8 3 :08 490 • 20 • 35 • 55 • 7 • 60 • 07 470 • 18 • 30 •45 • 55 • 50 • 06 450 • 14 • 25 • 35 •40 • 40 • 05 430 • 12 • 20 • 25 • 35 • 30 • 04 410 • 10 • 16 • 20 •25 • 25 • 03 390 • 09 • 12 • 16 • 20 • 16 • 02 370 • 08 • 12 • 16 • 18 • 16 • 02 350 • 08 • 12 • 16 • 20 • 18 • 03 330 • 08 • 12 • 16 • 20 • 20 • 03 310 • 08 • 12 • 16 • 20 • 20 • 04 290 • 07 • 12 • 16 • 20 • 20 • 04 270 • 07 • 10 • 14 • 18 • 20 • 04 250 • 07 • 10 • 12 • 16 • 16 • 04 230 • 06 • 09 • 12 • 14 • 14 • 04 210 • 06 • 08 • 10 • 12 • 12 • 03 190 • 05 • 07 • 08 • 10 • 09 • 03 A-11 12
Appendix 1
FEBRUARY - WESTERN NORTH AMERICA UNIT: PPMV PERCENTAGES INDICATE PROBABILITY OF EXCEFDING AMOUNT SHOWN.
65°N N=3 GlIN N =0
FLIGHT FLIGHT LEVEL ME AN 16% 2% • 1% MAX MIN LEVEL MEAN 16% 2% • 1% MAX MIN 590 2.5 2.9 3.3 3.7 2.9 1.9 590 2.03 2.8 3•2 3.6 2.9 107 570 2.3 2.7 3.1 3.5 2 • 7 1.9 570 2.1 2.6 3•0 3.4 2.7 1.6 550 2..2 2•5 2.9 3.2 1.8 550 1.9 2.3 207 3.1 2.5 1.5 530 2.0 2.3 2.6 3.0 • 4 530 1.7 2.1 2•5 2.9 2•4 1.3 510 1•8 2.1 204 2.5 2. 1.5 510 1.5 1.9 203 2.6 2.1 1.2 490 1.6 1.9 2.2 2.6 2.0 1.3 490 1.4 1.7 2•1 2.4 1.9 1.0 470 1.5 1.7 2.0 2.3 1.8 101 470 1.2 1.5 1.8 2.1 1.7 450 1.3 1.5 1.0 2.1 1.5 • 9 450 1.0 1.3 1•6 1.8 104 • 7 430 1.1 1.3 1.6 1.8 104 • 8 430 1.1 103 1.5 1.2.65 410 1.0 1.2 1.3 1.5 1.2 410 .9 1.1 1.3 1.0 • 60 390 • 8 • 9 1.0 1.1 • 9 • 7 390 •65 •7 • 8 • 8 • 50 370 •7 • 8 1.0 • 8 • 60 370 •55 • 60 • 7 • 8 •60 • 45 350 •55 • 65 •7 • 8 • 65 •45 350 • 40 • 50 • 55 • 65 • 50 • 35 330 •40 •45 • 55 .60 •45 • 30 330 • 30 • 35 • 40 .50 • 35 • 20 310 •20 • 25 • 35 • 40 • 30. • 12 310 • 16 •20 •25 • 35 •25 • 10 290 • 10 • 18 •25 • 30 • 20 • 05 290 • 09 • 14 • 18 •25 • 16 • 04 270 • 10 • 16 • 20 •25 • 18 • 04 270 • 08 • 12 • 16 •20 • 14 • 03 250 • 08 • 12 • 18 • 20 • 14 • 04 250 • 01 • 10 • 14 • 18 • 12 • 03 230 • 07 • 10 • 14 • 16 • 12 • 04 230 • 00 • 08 • 10 • 14 • 09 • 03 210 • 05 • 07 • 10 • 12 • 08 • 03 210 •05 • 06 • 08 • 10 • 07 •03 190 • 04 • 05 • 05 • 06 • 05 • 03 190 • 03 • 04 • 05 • no • 05 • 02 55°N N = 0 SUN N=10
FLIGHT FLIGHT LEVEL MEAN 16% 2* • 1* MAX MIN LEVEL MEAN 16% 2% • 1% MAX MIN 590 2.1 2.0 3.1 305 2.9 1.5 590 1.9 2.4 209 1.3 570 1.9 2.4 2.8 3.3 2.7 1.3 570 1.7 2.2 2•7 550 1.7 2.1 2.6 3.0 2.5 1.1 550 1.4 1.9 204 530 1.4 1.9 2.3 2.8 2.3 • 9 530 1.1 1.6 2.2 510 1.3 1.7 2.1 2.5 2.0 • 8 510 1.0 1.5 1.9 490 1.5 1.9 2.2 1.8 • 7 490 • 9 1.3 1.7 470 1.0 1.3 1.6 1.9 1.5 • 65 470 • 7 1.1 1.4 450 • 8 1.1 1.3 1.6 1.2 • 50 450 •55 • 8 1.1 430 •7 • 9 1.1 1.3 1.0 •45 430 045 •65 • 9 410 •55 • 7 • 9 1.0 • 8 • 40 410 •35 • 50 .65 390 •45 • 55 • 65 • 7 • 55 • 35 390 •25 • 35 •40 370 • 35 • 45 • 50 •60 ,45 • 25 370 •20 •25 • 35 350 • 30 • 35 • 40 • 50 • 35 • 20 350 • 16 • 20 • 25 330 •20 •25 • 30 • 35 • 25 • 14 330 • 12 • 16 • 20 •25 • 16 • 06 310 • 12 • 16 • 20 • 25 • 16 • 06 310 • 07 • 09 12 • 14 • 10 • 03 290 • 06 • 10 • 14 • 16 • 12 • 03 290 • 04 • 06 • 08 • 30 • 07 • 02 270 • 06 • 09 • 12 • 14 • 10 • 03 270 • 04 • 05 • 07 • 09 • 06 • 02 250 • 05 • 08 • 10 • 12 • 09 • 02 250 • 04 • 05 • 06 • 08 • 06 • 02 230 • 04 • 06 • 08 • 10 • 07 • 02 230 • 03 • 05 • 06 • 07 •05 • 02 210 • 04 • 05 • 07 • 08 • 06 • 02 210 •03 • 04 • 05 •no •05 • 02 190 • 03 • 04 • 05 • 05 • 04 • 02 190 • 03 • 03 • 04 •05 • 04 • 01 A-12 13
Appendix 1
FERRUARY - WESTERN NORTH AMERICA UNIT: PPMV PERCENTAGES INDICATE PROBABI! ITY OF EXCFFDING AMOUNT SHOWN.
45°N N=31 40°N N=69
FLIGHT FLIGHT LEVEL MEAN. 16% 2% • 1% MAX MIN LEVEL MEAN 16* 2% • 1% MAX MIN
3.5
3.1 207
2.1
1.9
1.7
1.4
1.2
1.0
• 8
• 7
• 7 • 60
•50
• 40
• 35
• 30
•25
• 20
• 14
• 09 35° N N= 14 FLIGHT LEVEL MFAN 16% 2% •1% MAX MIN A-13 14
Appendix 1
FEBRUARY - EASTERN NORTH AMERICA UNIT: PPMV PERCENTAGES INDICATE PROBABILITY OF EXCEEUING AMOUNT SHOWN.
30°N N=17 75°N N=40
FLIGHT FLIGHT LEVEL MEAN 16% 2* • 1% MAX MIN LEVEL MEAN 16% 2% • 1% MAX MIN 590 3.4 4.0 407 1.3 590 3.2 3.9 406 5.3 4.8 1.3 570 3.1 404 1.3 570 3.0 3.6 4•3 4.9 4.5 1.2 550 2.8 400 4.2 1.2 550 2.7 3.3 3•9 4.2 1.1 530 2.5 306 1.1 530 2.4 2.9 3.5 401 3.9 1.0 510 2.3 3.3 1.0 510 2.7 3•2 3.7 3.5 490 2.0 2.5 2.9 3.4 440 2.4 2•9 3.4 3.8 470 1.7 2.1 2.5 2.9 2.7 • 7 470 1.7 2.1 2•5 2.9 207 • 65 450 1.4 1.8 2.1 2.5 2.3 • 55 450 104 1.8 2•1 2.52.3 • 55 430 1.2 1.5 1.8 2.1 1.9 •40 430 1.2 1.5 1.8 2.1 1.9 • 40 410 1.1 1.3 1.0 1.8 1.6 • 30 410 1.0 1.3 1.5 1.8 1.6 • 30 390 • 8 1.0 1.2 1.4 1.2 • 18 390 1.0 1.21.4 1.2 • 18 370 •7 1.0 1.2 1.0 024 370 • 7 1.0 1.2 1.0 • 14 350 •55 • 9 1.0 • 12 350 •55 • 7 • 9 1.0 • 8 • 12 330 • 45 • 55 • 65 • 8 • 65 • 08 330 045 • 55 • 65 • 65 • 08 310 • 30 • 35 •45 •55 •45 • 05 310 • 30 • 35 •45 •50 •45 • 05 290 • 20 • 25 • 30 • 40 • 35 • 03 290 • 20 • 25 • 30 • 35 • 35 • 03 270 • 18 • 25 • 30 • 35 • 30 • 03 270 • 18 • 20 • 25 • 30 • 30 • 03 250 • 16 • 20 • 25 • 30 • 25 • 02 250 • 16 • 20 •25 •25 •25 • 02 230 • 14 • 16 • 20 •25 • 18 • 02 230 • 12 • 16 • 18 • 70 • 19 • 02 210 • 10 • 12 • 14 • 18 • 14 • 02 210 • 09 • 12 • 14 • 14 • 02 190 • 06 • 08 • 09 • 12 • 09 • 02 190 • 00 • 07 • 09 • 10 •04.02 TỎN N=25 65" N N=S
FLIGHT FLIGHT LEVEL MEAN 16% 2% • 1* MAX MIN LEVEL MEAN 16% 2% •1% MAX MIN 590 3.1 3.8 404 5.1 4.7 1.5 590 4.9 1.5 570 2.8 3.5 4.1 4.8 404 1.3 570 4.2 1.3 550 2.5 3.2 3.8 404 4.1 1.2 550 2.4 3.4 1.2 530 2.8 3.4 3.7 1.0 530 2.0 2.6 1.0 510 2.6 3.2 3•3 • 9 510 1.42.4 490 1.8 2.3 2.8 3.0 • 8 490 1.7 2.1 • 8 470 1.6 2.0 • 5 5 • 65 470 1.4 • 55 450 1.4 1.7 2 .. 1 2.1 •55 450 1.2 1•9 • 50 430 1.2 1.5 1.8 2.1 1.8 • 40 430 1.0 1.7 • 35 410 1.0 1.3 1.5 1.8 1.4 • 30 410 1.1 104 1.7 1.3 • 25 390 • 8 1.0 1.2 1.4 1.1 • 18 340 1•1 1.3 1.0 • 16 370 • 7 • У 1.0 • 14 370 • 60 1.0 1.1 • 12 350 • 55 1.0 • S • 12 350 •50 • 65 • 8 .9 • 10 330 •45 • 55 • 65 • 8 • 60 • 08 330 •40 • 50 •65 .7 •55 • 118 310 • 30 • 35 45 • 50 • 45 • 05 310 • 30 •45 •55 •40 • 05 290 • 20 • 25 30 35 • 35 • 03 290 •20 • 30 •35 • 40 • 35 • 04 270 • 18 • 20 25 • 30 • 30 • 03 270 • 18 • 25 • 30 • 35 • 30 • 03 250 • 16 • 18 20 • 25 • 25 • 02 250 • 14 • 18 • 20 • 25 • 25 • 03 230 • 12 • 16 18 • 20 • 18 • 02 230 • 10 • 12 • 16 • 18 • 18 • 02 210 • 09 • 1 2 14 • 16 • 14 • 02 210 • 00 • 10 • 12 • 14 •14 • 02 190 • 05 • 07 • 08 • 10 • 08 • 02 190 • 05 • 06 • 08 • 09 • 08 • 02 A-14 15
Appendix 1
FEBRUARY - EASTERN NORTH AMERICA UNIT: PPMV PERCENTAGES INDICATE PROBABILITY OF EXCEFOING AMOUNT SHOWN.
60°N N=4 55°N N=8
FLIGHT FLIGHT LEVEL MEẠN 16% 2% •1% MAX MIN LEVEL MEAN 16% 2% • 1 % MAX MIN 590 3.4 401401 590 2.5 3.2 3•8 4.5 400 1.4 570 570 2.3 209 3•5 401 3•7 1.1 550 304 400 307 550 2.0 2.6 3•2 3.7 3•4 • 8 530 1•9 530 1.7 2.2 2•8 3.3 3•1 • 50 510 1.7 510 • 45 490 1.5 2.0 204 209 2•7 • 65 490 2.7 • 40 470 1.3 1.7 2.1 2.5 2.3 • 55 470 • 35 450 1.0 104 107 201 1•9 • 45 450 1 • 1.7 • 30 430 • 9 1.2 1.5 1.8 1.6 • 35 430 1.1 104 104 • 25 410 1.0 1.3 1.5 1.3 • 25 410 • 65 • 9 1•1 1.4 1.2 • 18 390 • 60 • 8 1.0 1.2 1.0 • 14 390 •50 • 7 • 9 1.1 • 9 • 09 370 •50 • 65 • 8 1.0 • 8 • 10 370 •45 • 60 • 8 • 9 • 8 • 07 350 •40 • 55 • 7 • 9 • 09 350 • 35 • 50 • 65 • 8 • 65 • 07 330 • 30 •45 • 55 • 65 • 55 • 07 330 • 30 • 40 •50 •50 •55 • 06 310 • 25 •30 040 •45 •40 • 05 310 • 20 • 30 • 45 • 40 • 05 290 • 16 •25 • 30 • 35 • 35 • 04 290 • 14 • 20 • 30 • 30 270 • 14 • 18 • 25 • 30 • 30 • 03 270 • 12 • 16 •25 • 25 250 • 10 • 14 • 18 • 20 • 25 • 03 250 •09 230 • 07 • 10 • 14 • 16 • 18 • 02 230 • 06 • 09 210 • 06 • 08 • 10 • 12 • 14 • 02 210 190 • 04 • 06 • 07 • 09 • 08 • 01 190 • 04 50N N=10 N=20
FLIGHT FLIGHT LEVEL MEAN 16% 2% • 1% MAX MIN LEVEL MEAN MIN 590 2.4 3.0 3.6 4.2 4.0 590 1.1 570 2.1 2.7 3.3 3.9 3.8 570 550 1•8 2.4 3.0 3.5 3.5 550 530 2.1 3.1 3.3 530 • 40 510 2.5 510 • 35 490 2. • 35 490 1•9 2.8 30 470 1.0 1.4 1. 2. • 35 470 • 9 2.3 • 25 450 • 8 1.1 • 4 1.7 8 • 30 450 • 7 1.0 1.8 • 20 430 •7 • 9 1.2 5 • 25 430 • 60 • 8 1.6 • 16 410 • 60 • 8 1.0 1.2 1.3 • 16 410 • 50 • 7 • 1 390 •45 • 60 • 9 1.0 •07 390 • 40 • 55 • 03 370 • 40 50 • 6 • 9 • 05 370 • 30 • 45 1.1 • 02 350 • 30 •45 55 5 7 • 04 350 •25 • 40 • 50 .65 • 02 330 •25 • 35 •45 55 55 • 03 330 •20 • 30 •40 •=0 • 7 • 01 310 • 16 •25 30 •40 •40 • 02 310 •14 • 20 • 30 • 35 •50 • 01 290 • 12 • 18 25 • 30 • 30 • 02 290 • 10 • 16 •20 •25 •40 • 01 270 • 09 • 14 • 18 • 25 25 • 02 270 •08 • 12 • 18 •20 • 35 • 01 250 • 07 • 10 • 14 • 18 20 • 02 250 •06 • 10 014 • 16 • 30 • 01 230 05 • 07 • 10 • 12 16 • 02 230 • 05 • 07 • 10 • 12 •25 • 01 210 04 • 06 • 08 • 10 12 • 02 210 • 04 • 06 • 08 • 10 •20 • 01 190 - 04 • 05 • 07 • 08 • 09 • 01 190 • 04 • 06 • 07 •09 • 16 • 01 A-15 16