22-sep-19 01:49:54 SERIOUS INSTRUMENT PROBLEM !!! Problem with air flow pump or plumbing. Flow < 1 vLPM. --- 22-sep-19 01:49:54 Measurements ended --- . Number of lamps (L) = 7 . Filter running time = 1.58 hours . Total airflow this filter = .15 cubic meters . Mean BC concentration of all lamps = 3605 ng/vm3 . Report for lamp 1 (370 nm): . Ending voltages: sen(beam) = .738 sen(zero) = 0.021 . ref(beam) = 2.247 ref(zero) = 0.021 . Optical attenuation of filter deposit = 67 . Total aerosol black carbon on filter = 857 ng Mean aerosol black carbon concentration = 5850 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 1565 ppm. --- Report for lamp 2 (470 nm): . Ending voltages: sen(beam) = .891 sen(zero) = 0.021 . ref(beam) = 2.427 ref(zero) = 0.021 . Optical attenuation of filter deposit = 38 . Total aerosol black carbon on filter = 623 ng Mean aerosol black carbon concentration = 4253 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 1502 ppm. --- Report for lamp 3 (520 nm): . Ending voltages: sen(beam) = 1.351 sen(zero) = 0.021 . ref(beam) = 1.690 ref(zero) = 0.021 . Optical attenuation of filter deposit = 29 . Total aerosol black carbon on filter = 524 ng Mean aerosol black carbon concentration = 3579 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 1732 ppm. --- Report for lamp 4 (590 nm): . Ending voltages: sen(beam) = 1.017 sen(zero) = 0.021 . ref(beam) = 2.291 ref(zero) = 0.021 . Optical attenuation of filter deposit = 24 . Total aerosol black carbon on filter = 484 ng Mean aerosol black carbon concentration = 3306 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 1375 ppm. --- Report for lamp 5 (660 nm): . Ending voltages: sen(beam) = .356 sen(zero) = 0.021 . ref(beam) = .771 ref(zero) = 0.021 . Optical attenuation of filter deposit = 20 . Total aerosol black carbon on filter = 461 ng Mean aerosol black carbon concentration = 3146 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 1374 ppm. --- Report for lamp 6 (880 nm): . Ending voltages: sen(beam) = .755 sen(zero) = 0.021 . ref(beam) = 1.117 ref(zero) = 0.021 . Optical attenuation of filter deposit = 12 . Total aerosol black carbon on filter = 387 ng Mean aerosol black carbon concentration = 2645 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 921 ppm. --- Report for lamp 7 (950 nm): . Ending voltages: sen(beam) = 1.302 sen(zero) = 0.021 . ref(beam) = 1.179 ref(zero) = 0.021 . Optical attenuation of filter deposit = 11 . Total aerosol black carbon on filter = 360 ng Mean aerosol black carbon concentration = 2457 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 685 ppm. --- Disk space = 2.538783E+08 bytes free: One entry at every 10 minutes. There is space for 107941 hours ( 4498 days) more data --- Disk space = 2.538701E+08 bytes free: One entry at every 10 minutes. There is space for 107938 hours ( 4497 days) more data --- 22-sep-19 02:26:44 Tape feeder mechanism advancing for 2 spot(s). --- 22-sep-19 02:36:00 ============================================================= Automatic re-start ============================================================= --- MAGEE SCIEN. AETHALOMETER --- Aethalometer No. 360 --- 22-sep-19 02:49:54 Measurements started Starting voltages: . sen(zero) = 0.021 ref(zero) = 0.021 . Lamp 1 (370 nm): sen(beam) = 1.702 ref(beam) = 2.314 . Lamp 2 (470 nm): sen(beam) = 1.357 ref(beam) = 2.518 . Lamp 3 (520 nm): sen(beam) = 1.836 ref(beam) = 1.756 . Lamp 4 (590 nm): sen(beam) = 1.236 ref(beam) = 2.303 . Lamp 5 (660 nm): sen(beam) = .422 ref(beam) = .797 . Lamp 6 (880 nm): sen(beam) = .826 ref(beam) = 1.149 . Lamp 7 (950 nm): sen(beam) = 1.383 ref(beam) = 1.211 --- 22-sep-19 04:50:00 Measurements ended --- . Number of lamps (L) = 7 . Filter running time = 2 hours . Total airflow this filter = .3 cubic meters . Mean BC concentration of all lamps = 2220 ng/vm3 . Report for lamp 1 (370 nm): . Ending voltages: sen(beam) = .669 sen(zero) = 0.021 . ref(beam) = 2.323 ref(zero) = 0.021 . Optical attenuation of filter deposit = 76 . Total aerosol black carbon on filter = 963 ng Mean aerosol black carbon concentration = 3257 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 423 ppm. --- Report for lamp 2 (470 nm): . Ending voltages: sen(beam) = .773 sen(zero) = 0.021 . ref(beam) = 2.518 ref(zero) = 0.021 . Optical attenuation of filter deposit = 47 . Total aerosol black carbon on filter = 758 ng Mean aerosol black carbon concentration = 2567 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 264 ppm. --- Report for lamp 3 (520 nm): . Ending voltages: sen(beam) = 1.181 sen(zero) = 0.021 . ref(beam) = 1.754 ref(zero) = 0.021 . Optical attenuation of filter deposit = 36 . Total aerosol black carbon on filter = 657 ng Mean aerosol black carbon concentration = 2223 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 400 ppm. --- Report for lamp 4 (590 nm): . Ending voltages: sen(beam) = .887 sen(zero) = 0.021 . ref(beam) = 2.365 ref(zero) = 0.021 . Optical attenuation of filter deposit = 30 . Total aerosol black carbon on filter = 620 ng Mean aerosol black carbon concentration = 2097 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 678 ppm. --- Report for lamp 5 (660 nm): . Ending voltages: sen(beam) = .314 sen(zero) = 0.021 . ref(beam) = .798 ref(zero) = 0.021 . Optical attenuation of filter deposit = 26 . Total aerosol black carbon on filter = 597 ng Mean aerosol black carbon concentration = 2021 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 369 ppm. --- Report for lamp 6 (880 nm): . Ending voltages: sen(beam) = .680 sen(zero) = 0.021 . ref(beam) = 1.154 ref(zero) = 0.021 . Optical attenuation of filter deposit = 17 . Total aerosol black carbon on filter = 517 ng Mean aerosol black carbon concentration = 1750 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 611 ppm. --- Report for lamp 7 (950 nm): . Ending voltages: sen(beam) = 1.171 sen(zero) = 0.021 . ref(beam) = 1.218 ref(zero) = 0.021 . Optical attenuation of filter deposit = 14 . Total aerosol black carbon on filter = 481 ng Mean aerosol black carbon concentration = 1629 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 468 ppm. --- Disk space = 2.538701E+08 bytes free: One entry at every 10 minutes. There is space for 107938 hours ( 4497 days) more data --- 22-sep-19 04:50:00 Tape feeder mechanism advancing for 2 spot(s). --- ============================================================= --- MAGEE SCIEN. AETHALOMETER --- Aethalometer No. 360 --- 22-sep-19 05:09:54 Measurements started Starting voltages: . sen(zero) = 0.021 ref(zero) = 0.021 . Lamp 1 (370 nm): sen(beam) = 1.917 ref(beam) = 2.371 . Lamp 2 (470 nm): sen(beam) = 1.474 ref(beam) = 2.563 . Lamp 3 (520 nm): sen(beam) = 1.972 ref(beam) = 1.783 . Lamp 4 (590 nm): sen(beam) = 1.308 ref(beam) = 2.321 . Lamp 5 (660 nm): sen(beam) = .447 ref(beam) = .808 . Lamp 6 (880 nm): sen(beam) = .870 ref(beam) = 1.163 . Lamp 7 (950 nm): sen(beam) = 1.459 ref(beam) = 1.230 --- 22-sep-19 08:45:00 Measurements ended --- . Number of lamps (L) = 7 . Filter running time = 3.58 hours . Total airflow this filter = .31 cubic meters . Mean BC concentration of all lamps = 2056 ng/vm3 . Report for lamp 1 (370 nm): . Ending voltages: sen(beam) = .835 sen(zero) = 0.021 . ref(beam) = 2.380 ref(zero) = 0.021 . Optical attenuation of filter deposit = 79 . Total aerosol black carbon on filter = 1003 ng Mean aerosol black carbon concentration = 3297 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 220 ppm. --- Report for lamp 2 (470 nm): . Ending voltages: sen(beam) = .912 sen(zero) = 0.021 . ref(beam) = 2.562 ref(zero) = 0.021 . Optical attenuation of filter deposit = 45 . Total aerosol black carbon on filter = 735 ng Mean aerosol black carbon concentration = 2415 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 190 ppm. --- Report for lamp 3 (520 nm): . Ending voltages: sen(beam) = 1.363 sen(zero) = 0.021 . ref(beam) = 1.782 ref(zero) = 0.021 . Optical attenuation of filter deposit = 34 . Total aerosol black carbon on filter = 620 ng Mean aerosol black carbon concentration = 2040 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 189 ppm. --- Report for lamp 4 (590 nm): . Ending voltages: sen(beam) = .996 sen(zero) = 0.021 . ref(beam) = 2.376 ref(zero) = 0.021 . Optical attenuation of filter deposit = 28 . Total aerosol black carbon on filter = 574 ng Mean aerosol black carbon concentration = 1887 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 555 ppm. --- Report for lamp 5 (660 nm): . Ending voltages: sen(beam) = .350 sen(zero) = 0.021 . ref(beam) = .807 ref(zero) = 0.021 . Optical attenuation of filter deposit = 24 . Total aerosol black carbon on filter = 548 ng Mean aerosol black carbon concentration = 1802 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 229 ppm. --- Report for lamp 6 (880 nm): . Ending voltages: sen(beam) = .743 sen(zero) = 0.021 . ref(beam) = 1.166 ref(zero) = 0.021 . Optical attenuation of filter deposit = 15 . Total aerosol black carbon on filter = 466 ng Mean aerosol black carbon concentration = 1531 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 333 ppm. --- Report for lamp 7 (950 nm): . Ending voltages: sen(beam) = 1.275 sen(zero) = 0.021 . ref(beam) = 1.235 ref(zero) = 0.021 . Optical attenuation of filter deposit = 13 . Total aerosol black carbon on filter = 432 ng Mean aerosol black carbon concentration = 1420 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 404 ppm. --- Disk space = 2.538619E+08 bytes free: One entry at every 10 minutes. There is space for 107934 hours ( 4497 days) more data --- 22-sep-19 08:45:00 Tape feeder mechanism advancing for 2 spot(s). --- ============================================================= --- MAGEE SCIEN. AETHALOMETER --- Aethalometer No. 360 --- 22-sep-19 09:09:54 Measurements started Starting voltages: . sen(zero) = 0.021 ref(zero) = 0.021 . Lamp 1 (370 nm): sen(beam) = 1.878 ref(beam) = 2.346 . Lamp 2 (470 nm): sen(beam) = 1.458 ref(beam) = 2.538 . Lamp 3 (520 nm): sen(beam) = 1.964 ref(beam) = 1.771 . Lamp 4 (590 nm): sen(beam) = 1.302 ref(beam) = 2.292 . Lamp 5 (660 nm): sen(beam) = .446 ref(beam) = .796 . Lamp 6 (880 nm): sen(beam) = .857 ref(beam) = 1.149 . Lamp 7 (950 nm): sen(beam) = 1.442 ref(beam) = 1.205 --- 22-sep-19 12:55:00 Measurements ended --- . Number of lamps (L) = 7 . Filter running time = 3.74 hours . Total airflow this filter = .35 cubic meters . Mean BC concentration of all lamps = 1841 ng/vm3 . Report for lamp 1 (370 nm): . Ending voltages: sen(beam) = .837 sen(zero) = 0.021 . ref(beam) = 2.368 ref(zero) = 0.021 . Optical attenuation of filter deposit = 75 . Total aerosol black carbon on filter = 950 ng Mean aerosol black carbon concentration = 2768 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 301 ppm. --- Report for lamp 2 (470 nm): . Ending voltages: sen(beam) = .891 sen(zero) = 0.021 . ref(beam) = 2.546 ref(zero) = 0.021 . Optical attenuation of filter deposit = 46 . Total aerosol black carbon on filter = 743 ng Mean aerosol black carbon concentration = 2166 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 208 ppm. --- Report for lamp 3 (520 nm): . Ending voltages: sen(beam) = 1.342 sen(zero) = 0.021 . ref(beam) = 1.774 ref(zero) = 0.021 . Optical attenuation of filter deposit = 35 . Total aerosol black carbon on filter = 634 ng Mean aerosol black carbon concentration = 1847 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 304 ppm. --- Report for lamp 4 (590 nm): . Ending voltages: sen(beam) = .995 sen(zero) = 0.021 . ref(beam) = 2.387 ref(zero) = 0.021 . Optical attenuation of filter deposit = 29 . Total aerosol black carbon on filter = 592 ng Mean aerosol black carbon concentration = 1724 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 439 ppm. --- Report for lamp 5 (660 nm): . Ending voltages: sen(beam) = .347 sen(zero) = 0.021 . ref(beam) = .801 ref(zero) = 0.021 . Optical attenuation of filter deposit = 25 . Total aerosol black carbon on filter = 566 ng Mean aerosol black carbon concentration = 1651 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 255 ppm. --- Report for lamp 6 (880 nm): . Ending voltages: sen(beam) = .732 sen(zero) = 0.021 . ref(beam) = 1.161 ref(zero) = 0.021 . Optical attenuation of filter deposit = 16 . Total aerosol black carbon on filter = 485 ng Mean aerosol black carbon concentration = 1413 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 426 ppm. --- Report for lamp 7 (950 nm): . Ending voltages: sen(beam) = 1.263 sen(zero) = 0.021 . ref(beam) = 1.223 ref(zero) = 0.021 . Optical attenuation of filter deposit = 13 . Total aerosol black carbon on filter = 453 ng Mean aerosol black carbon concentration = 1319 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 324 ppm. --- Disk space = 2.538496E+08 bytes free: One entry at every 10 minutes. There is space for 107929 hours ( 4497 days) more data --- 22-sep-19 12:55:00 Tape feeder mechanism advancing for 2 spot(s). --- ============================================================= --- MAGEE SCIEN. AETHALOMETER --- Aethalometer No. 360 --- 22-sep-19 13:19:54 Measurements started Starting voltages: . sen(zero) = 0.021 ref(zero) = 0.021 . Lamp 1 (370 nm): sen(beam) = 1.903 ref(beam) = 2.265 . Lamp 2 (470 nm): sen(beam) = 1.479 ref(beam) = 2.427 . Lamp 3 (520 nm): sen(beam) = 1.992 ref(beam) = 1.711 . Lamp 4 (590 nm): sen(beam) = 1.316 ref(beam) = 2.228 . Lamp 5 (660 nm): sen(beam) = .449 ref(beam) = .762 . Lamp 6 (880 nm): sen(beam) = .884 ref(beam) = 1.115 . Lamp 7 (950 nm): sen(beam) = 1.478 ref(beam) = 1.168 --- 22-sep-19 16:55:00 Measurements ended --- . Number of lamps (L) = 7 . Filter running time = 3.58 hours . Total airflow this filter = .54 cubic meters . Mean BC concentration of all lamps = 1414 ng/vm3 . Report for lamp 1 (370 nm): . Ending voltages: sen(beam) = .826 sen(zero) = 0.021 . ref(beam) = 2.280 ref(zero) = 0.021 . Optical attenuation of filter deposit = 77 . Total aerosol black carbon on filter = 978 ng Mean aerosol black carbon concentration = 1858 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 514 ppm. --- Report for lamp 2 (470 nm): . Ending voltages: sen(beam) = .846 sen(zero) = 0.021 . ref(beam) = 2.428 ref(zero) = 0.021 . Optical attenuation of filter deposit = 52 . Total aerosol black carbon on filter = 839 ng Mean aerosol black carbon concentration = 1594 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 481 ppm. --- Report for lamp 3 (520 nm): . Ending voltages: sen(beam) = 1.267 sen(zero) = 0.021 . ref(beam) = 1.710 ref(zero) = 0.021 . Optical attenuation of filter deposit = 42 . Total aerosol black carbon on filter = 748 ng Mean aerosol black carbon concentration = 1421 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 713 ppm. --- Report for lamp 4 (590 nm): . Ending voltages: sen(beam) = .939 sen(zero) = 0.021 . ref(beam) = 2.318 ref(zero) = 0.021 . Optical attenuation of filter deposit = 35 . Total aerosol black carbon on filter = 719 ng Mean aerosol black carbon concentration = 1367 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 796 ppm. --- Report for lamp 5 (660 nm): . Ending voltages: sen(beam) = .328 sen(zero) = 0.021 . ref(beam) = .765 ref(zero) = 0.021 . Optical attenuation of filter deposit = 31 . Total aerosol black carbon on filter = 705 ng Mean aerosol black carbon concentration = 1339 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 470 ppm. --- Report for lamp 6 (880 nm): . Ending voltages: sen(beam) = .718 sen(zero) = 0.021 . ref(beam) = 1.126 ref(zero) = 0.021 . Optical attenuation of filter deposit = 20 . Total aerosol black carbon on filter = 629 ng Mean aerosol black carbon concentration = 1196 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 843 ppm. --- Report for lamp 7 (950 nm): . Ending voltages: sen(beam) = 1.237 sen(zero) = 0.021 . ref(beam) = 1.184 ref(zero) = 0.021 . Optical attenuation of filter deposit = 18 . Total aerosol black carbon on filter = 591 ng Mean aerosol black carbon concentration = 1123 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 755 ppm. --- Disk space = 2.538332E+08 bytes free: One entry at every 10 minutes. There is space for 107922 hours ( 4497 days) more data --- 22-sep-19 16:55:00 Tape feeder mechanism advancing for 2 spot(s). --- ============================================================= --- MAGEE SCIEN. AETHALOMETER --- Aethalometer No. 360 --- 22-sep-19 17:19:54 Measurements started Starting voltages: . sen(zero) = 0.021 ref(zero) = 0.021 . Lamp 1 (370 nm): sen(beam) = 1.825 ref(beam) = 2.302 . Lamp 2 (470 nm): sen(beam) = 1.415 ref(beam) = 2.469 . Lamp 3 (520 nm): sen(beam) = 1.888 ref(beam) = 1.733 . Lamp 4 (590 nm): sen(beam) = 1.262 ref(beam) = 2.273 . Lamp 5 (660 nm): sen(beam) = .432 ref(beam) = .778 . Lamp 6 (880 nm): sen(beam) = .834 ref(beam) = 1.133 . Lamp 7 (950 nm): sen(beam) = 1.402 ref(beam) = 1.189 --- 22-sep-19 19:35:00 Measurements ended --- . Number of lamps (L) = 7 . Filter running time = 2.25 hours . Total airflow this filter = .32 cubic meters . Mean BC concentration of all lamps = 2008 ng/vm3 . Report for lamp 1 (370 nm): . Ending voltages: sen(beam) = .804 sen(zero) = 0.021 . ref(beam) = 2.313 ref(zero) = 0.021 . Optical attenuation of filter deposit = 76 . Total aerosol black carbon on filter = 966 ng Mean aerosol black carbon concentration = 3080 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 261 ppm. --- Report for lamp 2 (470 nm): . Ending voltages: sen(beam) = .869 sen(zero) = 0.021 . ref(beam) = 2.469 ref(zero) = 0.021 . Optical attenuation of filter deposit = 45 . Total aerosol black carbon on filter = 724 ng Mean aerosol black carbon concentration = 2310 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 216 ppm. --- Report for lamp 3 (520 nm): . Ending voltages: sen(beam) = 1.289 sen(zero) = 0.021 . ref(beam) = 1.730 ref(zero) = 0.021 . Optical attenuation of filter deposit = 34 . Total aerosol black carbon on filter = 621 ng Mean aerosol black carbon concentration = 1981 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 379 ppm. --- Report for lamp 4 (590 nm): . Ending voltages: sen(beam) = .956 sen(zero) = 0.021 . ref(beam) = 2.346 ref(zero) = 0.021 . Optical attenuation of filter deposit = 28 . Total aerosol black carbon on filter = 583 ng Mean aerosol black carbon concentration = 1860 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 602 ppm. --- Report for lamp 5 (660 nm): . Ending voltages: sen(beam) = .334 sen(zero) = 0.021 . ref(beam) = .779 ref(zero) = 0.021 . Optical attenuation of filter deposit = 24 . Total aerosol black carbon on filter = 562 ng Mean aerosol black carbon concentration = 1794 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 317 ppm. --- Report for lamp 6 (880 nm): . Ending voltages: sen(beam) = .706 sen(zero) = 0.021 . ref(beam) = 1.141 ref(zero) = 0.021 . Optical attenuation of filter deposit = 16 . Total aerosol black carbon on filter = 491 ng Mean aerosol black carbon concentration = 1567 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 883 ppm. --- Report for lamp 7 (950 nm): . Ending voltages: sen(beam) = 1.217 sen(zero) = 0.021 . ref(beam) = 1.202 ref(zero) = 0.021 . Optical attenuation of filter deposit = 14 . Total aerosol black carbon on filter = 459 ng Mean aerosol black carbon concentration = 1465 ng/vm3 --- The reference beam showed lamp intensity fluctuations of 752 ppm. --- Disk space = 2.538209E+08 bytes free: One entry at every 10 minutes. There is space for 107917 hours ( 4497 days) more data --- 22-sep-19 19:35:00 Tape feeder mechanism advancing for 2 spot(s). --- ============================================================= --- MAGEE SCIEN. AETHALOMETER --- Aethalometer No. 360 --- 22-sep-19 19:59:54 Measurements started Starting voltages: . sen(zero) = 0.021 ref(zero) = 0.021 . Lamp 1 (370 nm): sen(beam) = 1.857 ref(beam) = 2.317 . Lamp 2 (470 nm): sen(beam) = 1.443 ref(beam) = 2.507 . Lamp 3 (520 nm): sen(beam) = 1.916 ref(beam) = 1.746 . Lamp 4 (590 nm): sen(beam) = 1.282 ref(beam) = 2.277 . Lamp 5 (660 nm): sen(beam) = .443 ref(beam) = .793 . Lamp 6 (880 nm): sen(beam) = .848 ref(beam) = 1.144 . Lamp 7 (950 nm): sen(beam) = 1.431 ref(beam) = 1.209 ---