2.9 A typical unifuntional Group `A' Service has a cadre structure which is constituted in the form of a pyramid, the various layers of the pyramid corresponding to different levels of responsibilities with no functional distinction. The pyramid starts with Junior Time Scale (currently Rs.8000-13500),which is generally a probation-cum-training grade for direct recruits, and passes through Senior Time Scale (Rs.10000-15200), Junior Administrative Grade (Rs.12000-16500) and Senior Administrative Grade (Rs.18400-22400). In a number of services, a Selection Grade (Rs.14300-18300) also exists as part of Junior Administrative Grade. In some cases, it is functional and in others it is non-functional. A few service cadres have also posts in the higher grades, i.e. above Senior Administrative Grade.