{ 0, 10, DS_TYPE_COUNTER, {.counter = 0}, {.counter = 1000}, NAN},
{10, 20, DS_TYPE_COUNTER, {.counter = 1000}, {.counter = 5000}, 400.0},
/* 32bit wrap-around. */
{ 0, 10, DS_TYPE_COUNTER, {.counter = 0}, {.counter = 1000}, NAN},
{10, 20, DS_TYPE_COUNTER, {.counter = 1000}, {.counter = 5000}, 400.0},
/* 32bit wrap-around. */