 Meanwhile, as Thornton was being given those specific detailed instructions for an upcoming run of the surface tension experiment at NASA Lewis Research Center facility, Al Sacco is as we can see continuing at his duties which at this point are to continue with protein crystal growth work, initializing samples of protein substances, getting the various solutions mixed together at just the right combination of quantities. And now we can take a look at a split image here to see that at the moment we do have multiple images of video coming to the ground and again in this split-screen view or quad image we're seeing four of the images that are coming to the ground simultaneously by means of the high-pack digital TV system that's debuting on this STS-73 flight, the digital video allowing multiplexing several images simultaneously rather than our previous mode of operation which was only capable of bringing one image, TV image to the ground at any given time. This is Spacelive Operations Control Huntsville and our live downlink video from Columbia showing us the Spacelive Module looking towards the aft where payload commander Kathy Thornton and payload specialist Al Sacco have been getting things ready to go into a sample exchange procedure at the crystal growth furnace. That'll be again a fairly lengthy operation with both crew members involved. It was preceded a few minutes ago by a preliminary step in which Al Sacco pulled a pin out of one of the sample mechanisms so that when they do the sample exchange, the sample that they'll be inserting into one chamber, into one holder rather one position of the crystal growth furnace carousel assembly that sample will fit in there. There's a unique keying system to these samples. Spacelive Huntsville, CTF says it's okay if that sack is in your way to remove that. Go ahead Kathy. We copy tape 4 out of VCR 4 and tape 43 in VCR 4. Some video of the surface tension driven convection experiment test chamber as Kathy Thornton is getting it filled up to the proper level for another test run with the, in this case one of the test cells that has a submerged heater element which we see there in the center screen. Spacelive Huntsville for Rommel, we're ready for that astroculture video playback whenever you are. Coming down of the potato plants, the potato tubers that are being grown in the astroculture facility on board in the mid-deck of Columbia, pilot Kent Romminger obtained this video a little earlier and now has the opportunity to replay it and we take it to the ground by downlink video and as we look down on the ocean below Columbia we see pronounced the cloudiness covering the broad ocean area of the Pacific. Columbia currently about 39 degrees north latitude the northernmost point of this orbit and that orbital inclination putting it at an equivalent point north about equivalent to the mid portion of California or the states of Utah, Nebraska, and northern Illinois. This is an infrared diagnostic tool for seeing the thermal mapping of the surface of the test cell of oil.