A vertical plant stand that is free standing or can be supported by burying its lower end in a base plant pot or in the ground. Other embodiments are disclosed. Improvements to lossy data compressiondecompression algorithms are proposed which include elements of spatial non-uniformity, for example modifying relatively dark portions of an image to a greater extent than relatively bright portions of the image. The method also includes adjusting a data transmission rate at the transmitter to the sustainable rate of data transmission after the decongestion time is ended. When all the address information pieces are erroneous, a correct address information piece is estimated from an address information piece associated with a previous error correction block and the descramble initial value is set in response to the estimated correct address information piece. The fast calibration apparatus further includes a phase comparator, a frequency detector and a fast calibration unit.