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| In the left half of the left plot, specific illuminance by a continuous row of luminaires spaced 5 heights is shown (right half is for a single luminaire). | The right plot is for a single luminaire, unrotated. |
Values below the scale are illuminance / 1 lx. This is for (unrealistic) “unit” case that luminaires would have lamps producing 1 klm only, would be point-like and just 1 m over the terrain.
# Source file: ies/Lithonia_Lighting-Outdoor-Building_Mounted-Wfl2-Ltl8592.ies
# Luminaire flux = 7926 lm,
# 50.2 % of the bulb flux
# between 75 and 90: 0.1 % of the luminaire flux
# - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above: max 2.3 cd/1000lm , 0.0 % of the luminaire flux
# 90deg and above: max 0.0 cd/1000lm , 0.0 % of the luminaire flux
# CutOff Type: Full_CutOff
# The following table gives luminous intensities which would be produced
# using a hypothetic bulb giving a luminous flux of 1000 lm (i.e., cd/klm):
# H: 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0
#V:
0.0 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572 1572
0.5 1474 1454 1445 1467 1471 1470 1468 1490 1510 1529 1507 1552 1535 1570 1564 1554 1576 1585 1611 1604 1606 1592 1603 1605 1627 1622 1601 1601 1612 1610 1590 1583 1583 1604 1593 1591 1601
1.0 1362 1321 1313 1339 1350 1351 1365 1384 1413 1439 1432 1478 1480 1523 1529 1529 1563 1560 1609 1609 1615 1603 1614 1615 1637 1629 1609 1606 1609 1605 1588 1576 1578 1587 1577 1584 1557
1.5 1228 1177 1169 1197 1209 1227 1231 1266 1304 1339 1343 1400 1413 1470 1489 1501 1546 1566 1611 1613 1621 1609 1619 1615 1632 1619 1593 1579 1575 1561 1544 1527 1528 1527 1521 1526 1469
2.0 1077 1032 1026 1055 1073 1084 1103 1144 1186 1233 1249 1315 1340 1410 1443 1470 1527 1560 1610 1617 1625 1611 1616 1604 1613 1589 1552 1523 1515 1499 1470 1447 1437 1435 1427 1432 1360
2.5 931 899 896 923 940 958 981 1026 1071 1126 1153 1229 1268 1348 1395 1435 1507 1552 1608 1621 1628 1608 1606 1583 1579 1545 1500 1452 1434 1421 1375 1349 1344 1326 1315 1320 1243
3.0 818 782 782 808 828 846 878 919 963 1022 1059 1143 1192 1281 1346 1402 1485 1542 1607 1621 1627 1601 1590 1553 1536 1489 1425 1372 1344 1316 1274 1242 1222 1210 1198 1200 1124
3.5 717 678 679 704 723 743 771 821 866 925 968 1058 1117 1217 1294 1363 1462 1533 1607 1623 1625 1591 1567 1516 1484 1425 1359 1298 1258 1210 1168 1137 1112 1100 1086 1086 1015
4.0 610 588 590 612 631 654 686 729 777 837 883 976 1044 1153 1241 1325 1439 1521 1605 1624 1621 1576 1538 1473 1427 1356 1274 1215 1164 1122 1074 1036 1006 987 968 968 894
4.5 533 513 515 535 551 574 601 643 692 756 807 898 971 1089 1186 1286 1414 1510 1602 1624 1614 1559 1504 1425 1367 1285 1196 1133 1076 1027 968 927 890 867 851 849 770
5.0 471 448 450 469 486 508 534 570 616 679 734 829 904 1025 1136 1247 1384 1497 1604 1624 1607 1536 1468 1374 1305 1215 1120 1052 982 922 862 813 775 752 737 737 675
5.5 410 385 388 407 425 446 471 511 554 611 671 763 840 964 1083 1206 1361 1484 1597 1622 1597 1512 1427 1321 1243 1145 1054 966 884 818 757 714 683 666 654 653 604
6.0 347 331 333 350 367 389 419 455 501 554 608 699 781 907 1032 1166 1332 1471 1598 1619 1585 1486 1387 1269 1181 1078 971 875 790 727 678 640 615 601 590 588 554
6.5 297 288 290 304 318 336 362 403 450 504 556 637 726 853 982 1126 1305 1461 1595 1617 1571 1457 1343 1217 1120 1011 888 787 711 655 614 583 562 539 539 536 506
7.0 265 255 257 268 280 295 325 355 399 456 507 585 671 802 934 1086 1276 1446 1594 1613 1557 1427 1300 1164 1059 936 802 710 648 600 563 536 516 503 494 490 464
7.5 236 230 230 241 250 263 282 312 353 410 463 541 623 753 888 1047 1248 1433 1591 1611 1540 1397 1258 1113 998 859 736 649 597 554 519 492 473 464 450 447 422
8.0 214 211 211 221 227 238 254 279 312 365 423 501 577 704 842 1006 1220 1419 1589 1605 1522 1361 1214 1063 931 785 667 600 553 516 480 452 438 422 411 409 388
8.5 199 197 197 204 210 218 231 252 281 326 382 460 539 656 801 968 1192 1405 1587 1601 1502 1330 1171 1013 861 722 621 558 515 478 443 417 402 391 377 375 357
9.0 188 190 190 195 197 203 213 231 256 293 340 422 503 611 761 930 1163 1390 1583 1595 1481 1293 1129 960 794 669 579 523 479 444 410 385 368 358 347 344 328
9.5 189 179 180 185 190 193 200 214 234 268 306 385 468 573 721 894 1135 1376 1581 1589 1460 1260 1086 901 738 626 548 489 446 408 380 356 342 328 317 314 297
10.0 166 164 166 175 181 186 191 201 219 246 279 349 434 542 682 859 1108 1361 1578 1583 1439 1228 1045 844 689 589 512 459 415 382 352 329 313 299 289 288 274
10.5 157 156 156 161 166 177 186 191 206 228 258 317 399 512 643 826 1080 1347 1576 1575 1418 1198 1004 789 648 556 482 429 388 356 326 302 284 277 267 264 255
11.0 150 150 150 155 157 162 174 186 196 215 238 291 367 481 606 793 1052 1332 1573 1569 1396 1163 961 738 612 526 454 400 362 331 300 279 264 255 248 246 233
11.5 145 145 145 149 151 155 161 178 190 203 223 269 336 451 572 761 1023 1316 1571 1561 1373 1133 913 694 579 497 426 378 339 306 279 258 247 236 228 226 217
12.0 141 142 142 145 147 149 154 163 186 194 210 250 308 422 546 731 995 1300 1567 1551 1349 1098 863 655 549 470 402 352 314 284 258 242 227 220 214 212 206
12.5 139 139 139 142 143 145 149 157 173 189 200 234 286 394 520 700 966 1285 1563 1542 1325 1065 816 622 523 444 379 332 292 266 243 224 214 209 204 203 199
13.0 135 136 135 139 140 142 145 151 162 187 191 221 267 366 495 669 940 1268 1558 1531 1322 1033 771 592 497 420 358 310 275 249 227 212 204 201 196 194 188
13.5 130 132 131 135 137 139 142 147 156 173 185 211 250 340 470 639 914 1252 1554 1521 1278 1003 732 564 473 398 338 290 257 235 215 204 197 192 187 186 180
14.0 128 128 128 132 133 135 139 143 151 162 184 201 236 315 446 610 888 1236 1549 1510 1254 968 695 540 450 378 317 275 246 221 205 196 187 183 179 179 178
14.5 123 122 123 128 130 132 136 140 147 157 177 194 223 294 422 582 863 1221 1546 1499 1230 936 662 516 428 359 298 257 231 211 198 185 179 178 175 174 172
15.0 117 118 118 123 126 129 132 137 143 152 163 188 213 276 399 557 838 1203 1541 1487 1205 896 633 494 409 341 280 246 219 204 187 178 175 173 168 167 160
15.5 113 114 114 118 121 125 129 133 140 148 157 187 205 261 376 535 814 1189 1537 1475 1181 860 605 473 390 323 268 234 210 195 179 174 170 165 159 157 151
16.0 109 110 110 114 117 121 125 130 137 144 152 184 196 246 354 513 790 1171 1531 1462 1157 818 580 453 372 305 252 222 203 184 175 169 161 156 151 149 147
16.5 107 108 108 111 113 116 121 126 134 141 147 168 191 233 332 494 766 1154 1526 1449 1132 785 556 434 356 289 243 212 193 177 171 162 152 148 145 145 144
17.0 104 105 105 109 111 113 117 124 131 138 143 161 185 222 310 475 742 1137 1520 1409 1108 747 535 415 339 276 230 205 182 175 165 153 145 144 143 142 142
17.5 101 102 102 106 108 110 113 119 127 135 140 156 182 214 292 456 719 1120 1515 1422 1084 719 514 398 323 261 220 197 177 170 157 145 142 141 139 140 139
18.0 98 100 100 104 105 108 110 116 124 132 137 152 183 207 276 437 695 1101 1509 1406 1059 687 495 382 307 247 210 185 174 165 148 141 139 139 138 138 138
18.5 96 97 98 101 103 105 108 112 120 128 135 148 173 199 262 418 670 1085 1504 1391 1035 661 477 366 292 241 205 178 170 157 143 139 137 138 136 137 137
19.0 95 96 96 99 101 103 106 110 116 125 132 144 161 193 250 399 648 1068 1501 1378 1010 633 460 352 279 229 197 173 166 148 140 136 135 136 136 136 136
19.5 92 94 94 97 98 100 104 108 113 122 129 141 156 188 238 382 626 1050 1495 1364 986 613 444 339 269 219 186 171 159 143 138 135 135 136 135 136 136
20.0 91 92 92 95 96 98 101 105 111 118 125 138 152 185 228 365 606 1035 1492 1351 961 592 428 325 253 212 179 167 150 140 136 134 134 135 134 135 135
21.0 88 89 89 92 93 95 97 101 106 112 119 134 144 182 212 331 568 1001 1482 1323 912 552 398 298 238 198 171 158 141 136 133 132 133 134 133 133 132
22.0 86 87 87 89 90 91 94 97 102 108 113 126 138 164 200 297 532 966 1471 1293 858 519 371 274 218 183 167 144 137 134 132 131 131 132 131 131 131
23.0 84 85 85 87 88 88 90 94 99 104 108 120 132 154 189 268 498 930 1458 1262 802 487 346 251 204 173 154 138 134 132 130 129 129 130 128 128 128
24.0 81 83 82 85 86 87 88 90 95 100 104 114 128 147 182 246 468 896 1446 1231 750 457 323 232 190 168 142 134 132 131 128 127 127 128 126 126 125
25.0 81 82 82 83 84 85 86 88 92 97 101 110 121 140 178 225 440 865 1433 1201 705 430 299 219 179 162 136 131 130 129 126 125 124 125 123 123 123
26.0 81 82 81 83 83 83 84 86 90 94 97 106 116 135 168 211 412 832 1417 1171 662 403 277 204 171 147 133 129 128 127 124 122 122 123 121 121 120
27.0 81 82 81 83 82 82 82 84 87 91 94 103 110 130 154 199 383 797 1402 1141 622 379 259 191 167 139 130 127 126 124 122 120 120 121 119 119 118
28.0 81 83 82 83 82 81 81 82 85 88 91 99 106 125 147 189 355 765 1388 1111 586 356 233 179 162 134 128 125 124 122 119 118 118 119 117 117 116
29.0 81 82 82 84 83 82 81 81 84 86 88 96 103 118 141 181 328 734 1374 1081 554 334 218 172 148 131 126 123 122 120 118 116 116 117 115 116 115
30.0 81 82 81 83 83 82 81 80 82 84 86 94 100 114 135 174 300 700 1357 1052 523 312 206 165 139 128 123 121 120 118 116 114 114 116 114 115 114
31.0 81 82 81 83 82 82 81 80 80 82 83 91 97 110 130 169 272 665 1340 1021 492 291 191 162 133 126 121 119 118 116 114 113 113 115 113 113 112
32.0 81 82 81 83 82 82 81 80 80 80 82 87 94 106 125 163 246 629 1315 984 464 271 181 156 130 124 119 117 116 114 113 112 112 112 110 110 109
33.0 81 82 82 83 82 81 81 80 79 79 80 85 92 103 121 152 225 589 1276 935 434 249 171 146 127 121 117 114 113 113 112 111 110 109 108 108 107
34.0 79 80 80 83 83 81 80 80 79 78 79 84 89 100 115 143 206 545 1218 875 402 231 164 135 124 119 114 113 111 111 110 109 107 108 106 106 106
35.0 75 76 76 80 82 81 80 79 80 79 77 82 86 97 111 136 189 498 1144 804 370 206 158 129 122 117 113 111 110 110 108 107 106 107 105 106 105
36.0 70 70 71 76 79 81 81 79 79 78 76 81 84 95 107 130 176 450 1057 725 336 187 152 125 119 114 111 109 108 108 105 105 105 106 105 105 105
37.0 61.4 60.5 63.2 69 74 77 80 78 78 78 75 79 82 92 103 123 164 401 955 640 302 175 147 122 117 112 109 107 107 106 103 103 104 105 104 104 102
38.0 49.9 48.2 52.0 59.1 67 72 77 78 78 78 75 78 80 89 99 118 154 352 849 551 270 162 139 118 114 110 106 105 105 103 102 102 103 103 99 98 95
39.0 38.2 36.5 39.5 47.0 56.4 66 72 77 78 77 75 77 78 86 96 112 144 306 734 462 239 151 131 115 111 108 104 103 103 101 100 101 100 97 92 91 87
40.0 27.6 26.4 28.9 34.7 43.7 55.6 66 72 77 77 75 76 77 83 92 107 135 264 619 383 210 142 123 112 108 106 102 101 100 99 99 97 94 89 83 81 76
41.0 20.2 19.0 20.9 24.7 32.2 43.4 56.9 67 75 76 74 75 76 80 88 102 126 224 505 315 185 134 117 109 106 103 100 99 97 97 96 92 86 78 71 67 60.8
42.0 14.6 13.6 14.8 17.9 21.2 32.0 45.3 59.1 70 76 74 74 74 77 84 96 118 188 397 253 162 126 112 105 103 101 99 97 96 95 91 83 75 64 55.0 50.7 43.6
43.0 10.0 10.0 10.6 12.8 16.8 22.5 33.5 49.7 65 75 73 74 72 75 81 91 111 159 301 201 144 120 107 102 100 99 96 95 94 91 83 72 60.3 47.4 39.5 35.1 29.4
44.0 8.7 8.1 8.5 9.2 12.0 16.5 24.0 38.5 57.3 70 73 73 70 72 77 87 104 136 224 163 130 113 103 98 98 96 94 92 92 85 73 58.0 43.9 32.9 26.4 24.1 20.3
45.0 7.7 7.4 7.2 7.9 8.5 11.8 17.0 27.7 47.5 65 72 73 69 70 74 83 98 121 169 136 118 107 99 95 95 94 92 91 88 76 60.1 43.2 30.4 22.3 17.9 16.1 13.4
46.0 7.1 7.7 7.3 7.3 7.6 8.0 11.8 19.2 36.2 58.3 70 72 69 68 71 79 94 109 135 120 111 102 95 92 92 92 90 89 81 65 45.5 29.8 20.2 14.6 11.5 10.3 8.5
47.0 7.4 7.3 7.0 6.8 6.4 6.8 7.8 13.0 25.9 49.4 65 71 68 66 68 76 88 101 115 109 104 98 92 89 90 90 87 85 72 51.6 31.9 19.6 13.2 9.4 7.9 7.6 7.8
48.0 7.4 7.4 7.0 6.8 6.1 5.9 6.2 9.2 18.2 38.4 59.7 70 67 65 65 72 84 97 106 103 100 93 89 86 87 87 85 79 60.9 38.0 21.3 12.5 8.5 7.3 7.5 7.8 8.0
49.0 7.4 7.4 7.3 6.4 5.8 5.2 5.6 6.5 12.6 28.3 52.5 68 66 63 62.8 69 80 93 101 99 96 90 86 84 85 85 82 71 48.2 25.9 13.5 7.8 6.8 7.4 7.4 7.8 8.0
50.0 7.4 7.4 6.8 6.6 5.8 5.2 5.3 6.1 8.5 19.9 42.8 63.2 65 61.5 60.5 66 77 89 97 95 92 86 82 81 82 82 78 60.4 35.0 17.2 8.5 6.4 6.8 7.7 8.2 8.3 8.6
51.0 7.2 7.2 7.7 6.5 5.8 5.0 5.1 5.3 6.5 13.7 33.2 57.5 62.8 60.3 58.7 63.1 73 85 93 91 89 83 80 78 79 79 71 48.2 24.2 10.7 6.3 5.8 6.7 7.8 8.3 8.5 8.3
52.0 6.8 7.7 8.4 8.7 6.3 5.1 4.9 5.3 5.8 9.5 24.4 51.0 61.5 59.0 56.8 60.3 69 81 90 88 85 80 77 76 77 76 62.5 36.7 16.1 7.3 5.8 5.9 6.6 7.8 8.0 8.0 7.7
53.0 7.1 7.7 8.4 9.4 8.5 5.4 4.8 4.9 5.4 6.8 17.1 42.6 58.7 57.1 55.0 57.7 67 77 86 84 82 76 74 76 74 72 52.3 25.7 10.0 5.8 5.8 5.7 7.0 7.4 7.7 7.8 7.7
54.0 7.2 7.8 8.5 9.3 8.9 7.2 4.9 4.4 5.1 5.6 11.6 33.3 54.4 55.5 53.0 55.3 62.7 73 82 81 78 73 71 70 72 66 40.9 16.8 7.0 5.6 5.5 6.3 7.3 7.7 7.3 7.2 6.8
55.0 6.8 7.3 8.2 8.7 8.3 7.3 5.1 4.4 4.7 5.2 7.5 24.5 48.8 54.4 51.0 52.2 59.3 70 78 77 74 70 68 68 69 57.7 29.9 10.4 5.6 5.5 5.5 6.6 7.4 7.5 7.1 7.0 6.5
56.0 6.2 6.1 7.0 7.5 8.0 7.3 5.2 4.2 4.6 4.7 5.6 17.5 42.4 53.1 49.2 50.0 56.2 66 74 73 71 67 66 65 65 48.2 20.6 7.4 5.5 5.2 5.5 6.6 7.4 7.7 7.4 6.6 6.5
57.0 5.3 5.1 5.3 5.9 6.8 6.6 4.9 4.3 4.4 4.6 5.2 12.0 34.9 51.3 47.6 47.0 52.7 61.3 69 68 67 63.2 62.3 62.7 60.6 37.7 13.5 5.5 5.2 4.9 5.2 6.5 7.4 7.5 6.6 5.6 5.1
58.0 4.5 4.5 4.8 4.5 5.1 5.6 4.5 4.1 4.2 4.5 4.9 7.9 26.5 49.3 45.1 43.7 48.7 56.8 65 64 61.8 58.8 58.8 60.3 54.5 27.8 9.1 5.3 5.1 4.9 5.1 6.6 6.6 6.3 5.3 5.1 4.8
59.0 4.6 4.3 4.6 4.5 4.2 4.5 4.3 3.7 4.2 4.5 4.7 5.9 19.6 42.6 42.6 40.8 44.9 52.2 59.5 58.5 56.4 54.4 54.9 56.8 46.3 19.3 6.3 5.1 4.7 4.7 5.2 5.6 5.2 4.5 4.3 4.5 4.9
60.0 4.2 4.3 4.2 4.0 3.9 4.0 3.9 3.5 4.0 4.3 4.6 5.6 13.8 36.2 39.7 37.3 40.3 47.3 53.8 52.9 51.5 49.6 50.6 52.5 36.9 12.5 5.6 5.2 4.9 4.6 4.4 4.3 4.3 4.0 4.0 4.4 4.4
62.5 3.5 3.4 3.5 3.4 3.1 2.8 3.4 3.3 3.7 3.5 3.9 4.7 5.6 17.9 29.8 25.8 29.4 34.0 38.4 37.8 36.5 35.3 37.1 35.0 15.0 5.5 4.9 4.7 4.2 3.5 3.1 3.5 3.3 3.5 3.9 3.9 3.5
65.0 3.0 2.5 2.7 2.5 2.1 2.3 2.2 2.5 2.3 2.7 3.0 3.5 3.9 6.6 16.0 16.6 17.8 20.9 23.6 22.8 21.5 20.4 21.5 15.1 5.6 4.4 3.9 3.1 3.0 2.7 2.2 2.3 2.5 2.8 3.0 3.0 2.7
67.5 2.1 2.1 1.8 2.1 2.1 2.1 2.1 1.9 2.1 2.1 2.3 2.7 3.3 3.5 6.2 8.5 10.3 12.2 13.7 12.7 10.9 9.4 8.7 5.2 3.4 3.1 2.7 2.2 1.9 1.9 2.3 2.1 2.1 2.1 2.3 2.5 2.3
70.0 1.8 1.8 1.8 2.1 2.1 1.9 1.8 1.9 1.8 1.9 1.9 2.2 2.3 3.0 4.0 5.6 7.4 9.1 10.1 9.2 7.7 5.9 4.3 3.3 2.7 2.3 2.1 2.1 1.8 2.1 1.8 2.1 1.9 2.1 1.8 1.9 2.1
72.5 1.5 1.5 1.3 1.3 1.5 1.8 1.5 1.3 1.2 1.6 1.3 1.2 1.6 2.2 3.0 4.3 5.6 7.1 7.8 7.3 5.8 4.2 3.0 2.3 2.1 1.8 1.5 1.5 1.6 1.6 1.5 1.3 1.6 1.3 1.2 1.2 1.5
75.0 0.6 0.6 0.9 0.9 0.8 1.1 0.9 1.1 1.1 0.7 0.8 1.1 1.1 1.6 2.0 2.8 4.6 5.8 6.6 5.8 4.3 3.4 2.3 2.0 1.5 1.1 1.3 1.1 1.3 1.1 1.3 1.5 1.1 1.0 1.0 1.0 0.9
77.5 0.0 0.0 0.1 0.0 0.0 0.1 0.3 0.3 0.1 0.0 0.1 0.1 0.6 0.8 1.2 1.6 2.7 3.5 4.3 3.7 2.7 1.9 1.2 0.8 0.6 0.1 0.3 0.3 0.1 0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.0
80.0 0.0 0.0 0.1 0.0 0.0 0.3 0.1 0.0 0.1 0.0 0.0 0.1 0.3 0.5 0.5 0.9 1.3 2.1 2.3 2.1 1.3 1.1 0.9 0.4 0.1 0.3 0.1 0.0 0.1 0.2 0.0 0.0 0.1 0.0 0.0 0.0 0.0
82.5 0.0 0.0 0.0 0.0 0.0 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.3 0.6 0.6 0.4 0.6 0.2 0.3 0.1 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
85.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
87.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
90.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
(A similar table including even some other results can be computed at producer's website.)