Particular attention has to be paid to this question of conduit temperature, due to heavily loaded cables in the vicinity of stations and substations. Fig. 18 shows the temperature profiles of two conduit lines between the Fisk Street Station and the Calumet Station, in which there are several pronounced peaks along the route in the vicinity of substations. There is also a pronounced peak near the Fisk Street Station due to temporary storage of coal on the ground above the conduit line.