Example "irradat" file showing the Hydrolight "incident irradiance-data standard format" These files are read by Hydrolight subroutine "irradat" on file ..\maincode\irradat.f Ten ascii header records (for identification of the user's data) are expected. Record 11 begins with (free format) pairs of wavelength (in nm) and total incident downward sky irradiance values. The last value is flagged by either an end of file or by negative wavelength value Record 7: " Record 8: " Record 9: " wavenm (nm) Edtotal(W/m^2/nm) 355. 0.551 365. 0.6506 395. 0.7316 405. 1.082 415. 1.135 425 1.121 435. 1.147 445. 1.329 455. 1.427 465. 1.417 475. 1.435 495. 1.407 505. 1.390 515 1.333 525 1.369 535 1.383 545 1.365 585 1.308 595 1.254 615. 1.274 625 1.243 635 1.128 645 1.198 685 1.084 695 1.033 -1. -1.