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The precipitable water vapor (PWV) is expected to be 0.3-1.5 mm at the TAO site. Atmospheric transmittance curves with these PWVs are provided on this page. The data were calculated by the ATRAN model (Lord, S. D., 1992, NASA Technical Memorandum 103957) run on a NASA website.
The figure below shows near-infrared atmospheric transmittances with PWVs of 0.3, 0.5, 0.7, 0.9, 1.2, and 1.5 mm. The data are smoothed with a Gaussian function with an FWHM of 0.002 um-1.
The source data with other resolution data are provided as below.
| PWV (mm) | Resolution | ||
| No Smoothing | 0.00056 um-1 | 0.002 um-1 | |
| 0.3 |  data | data | data |
| 0.5 | data | data | data |
| 0.7 | data | data | data |
| 0.9 | data | data | data |
| 1.2 | data | data | data |
| 1.5 | data | data | data |
The figure below shows the N-band atmospheric transmittance. The data are smoothed with a Gaussian function with an FWHM of 0.0005 um-1.
| PWV (mm) | Resolution | |
| No Smoothing | 0.0005 um-1 | |
| 0.3 | data | data |
| 0.5 | data | data |
| 0.7 | data | data |
| 0.9 | data | data |
| 1.2 | data | data |
| 1.5 | data | data |
The Q-band atmospheric transmittance is shown in the figure below. The plotted data are smoothed with a Gaussian function with an FWHM of 0.0005 um-1.
| PWV (mm) | Resolution | |
| No Smoothing | 0.0005 um-1 | |
| 0.3 | data | data |
| 0.5 | data | data |
| 0.7 | data | data |
| 0.9 | data | data |
| 1.2 | data | data |
| 1.5 | data | data |
