How high is the baffle in the table tennis competition area?

The standard table tennis table consists of two pieces, each with a length of 1.37m, a total length of 2.74m, a table top width of 1.525m, and a distance between the table top and the ground of 0.76m White lines with a width of 0.02m are drawn on the four sides of the table top, and a middle line with a width of 0.003m should be parallel to the long side of the table top. The clear length is1.83m, and the clear height is 0.1.525m. As long as the venue is not crowded, the rules of the game are: 2. 1.2 The table top does not include the edge perpendicular to the table top. 2. 1.3 The table can be made of any material and should have consistent elasticity, that is, when the standard ball falls to the table from a height of 30 cm, the bouncing height should be about 23 cm. 2. 1.4 The desktop should be dark and dull, with a 2 cm wide white edge line along the edge of each 2.74m desktop and a 2 cm wide white end line along the edge of each 1.525m desktop. 2. 1.5 The competition field is divided into two equal competition areas by a vertical net parallel to the end line, and the whole area of each competition area should be a whole. In 2. 1.6 doubles, each table area should be divided into two equal "half areas" with a 3 mm wide white center line. The midline is parallel to the sideline and should be regarded as a part of the right half. 2.2 net device 2.2. 1 the net device includes a net, a net hanging rope, a net post and a clip part for fixing it on the table. 2.2.2 The net should be hung on the rope, and both ends of the rope are tied to the vertical net column, with the height of15.25cm, and the distance from the outer edge of the net column to the outer edge of the sideline is15.25cm.. 2.2.3 The distance from the top of the whole net to the table 15.25cm. 2.2.4 The bottom of the whole net should be as close to the table as possible, and its two ends should be as close to the net posts as possible. The venue standard competition area should be surrounded by the same dark baffle with a height of 0.75m and separated from the adjacent competition area and spectators. The area of each table is 8m× 16m. There are tables, nets, balls, baffles, referee tables, referee chairs and scorers in the venue. At least two electronic scorecards should be used for each table, and four should be used for the final. Electronic scoreboards are placed on both sides of the table tennis court or on the back of the four corners, marked with the names of athletes, countries or regions, time, scores of each game, etc. So that the audience can see the score clearly on the display screen in the stands. There is also a large electronic display screen that can be clearly seen by all the audience in the gymnasium, which can display all the information about table games at the same time. In the final or when there is only one table, the referee uses a microphone to facilitate the audience to watch the game. In order to ensure that the TV broadcast images are clear, the lighting Olympic Games requires the illumination of 1500 ~ 2500 lux, and the illumination of all tables is the same. If it is necessary to add a temporary light source due to TV broadcast and other reasons, the angle between the light source and the ceiling should be greater than 75 degrees. The illuminance of other parts of the competition area shall not be less than 1/2 of the illuminance of the competition table, and the light source shall not be less than 5 meters from the ground. Generally, the surrounding area of the venue should be dark, and the illuminance in the auditorium should be significantly lower than that in the competition area, so as to avoid dazzling light sources and natural light without covered windows. The floor shall be made of wood or movable plastic floor of brand and type approved by ITTF. The floor is elastic, and there are no other signs and signs of movement. The color of the floor should not be too light or too reflective, but red or crimson; Don't use too much oil or wax to avoid slipping. The air velocity in the temperature pavilion is controlled within 0.2 ~ 0.3m/s, and the temperature is about 20 ~ 25 degrees Celsius, or 5 degrees Celsius lower than the outdoor temperature. Editor: Everyone who comes to watch the Olympic table tennis match should establish an idea: safety inspection is for themselves and for everyone. General security personnel will do their duty and carefully check the Olympic table tennis competition. If they were stricter, they would have to rummage through their bags. If they are more strict, they will even ask to take off their shoes. When you watch the game on the court, you will encounter the problem of seat adjustment. When adjusting seats, we should follow the principle of leaving good seats to others, and the language should be polite. Table tennis is an indoor game. It is not recommended to bring gongs and drums into the gymnasium, and the flags and slogans should not be too big.