every seconds:
    loop all players:
        level of loop-player is more than -1
        level of loop-player is less than 20
        if loop-player is sneaking:
            the block below loop-player is not air
            add 0.5 to level progress of loop-player
        add 0.3 to level progress of loop-player

every seconds:
    loop all players:
        level of loop-player is more than 21
        level of loop-player is less than 35
        if loop-player is sneaking:
            the block below loop-player is not air
            add 0.3 to level progress of loop-player
        add 0.1 to level progress of loop-player

every seconds:
    loop all players:
        level of loop-player is more than 36
        level of loop-player is less than 50
        if loop-player is sneaking:
            the block below loop-player is not air
            add 0.1 to level progress of loop-player
        add 0.09 to level progress of loop-player

every seconds:
    loop all players:
        level of loop-player is more than 51
        level of loop-player is less than 75
        if loop-player is sneaking:
            the block below loop-player is not air
            add 0.09 to level progress of loop-player
        add 0.07 to level progress of loop-player

every seconds:
    loop all players:
        level of loop-player is more than 76
        level of loop-player is less than 100
        if loop-player is sneaking:
            the block below loop-player is not air
            add 0.07 to level progress of loop-player
        add 0.05 to level progress of loop-player