/* First render quantiles? */

SELECT
  NTH(50, quantiles(renderStart,101)) median,
  NTH(75, quantiles(renderStart,101)) seventy_fifth,
  NTH(90, quantiles(renderStart,101)) ninetieth
FROM [httparchive:runs.2013_06_01_pages]

/* Trend quantiles over time ... */


SELECT * FROM
(SELECT '2013_06' date,
  NTH(50, quantiles(renderStart,101)) median,
  NTH(75, quantiles(renderStart,101)) seventy_fifth,
  NTH(90, quantiles(renderStart,101)) ninetieth
FROM [httparchive:runs.2013_06_01_pages]),
(SELECT '2013_05' date,
  NTH(50, quantiles(renderStart,101)) median,
  NTH(75, quantiles(renderStart,101)) seventy_fifth,
  NTH(90, quantiles(renderStart,101)) ninetieth
FROM [httparchive:runs.2013_05_01_pages]),
(SELECT '2013_04' date,
  NTH(50, quantiles(renderStart,101)) median,
  NTH(75, quantiles(renderStart,101)) seventy_fifth,
  NTH(90, quantiles(renderStart,101)) ninetieth
FROM [httparchive:runs.2013_04_01_pages]),
(SELECT '2013_03' date,
  NTH(50, quantiles(renderStart,101)) median,
  NTH(75, quantiles(renderStart,101)) seventy_fifth,
  NTH(90, quantiles(renderStart,101)) ninetieth
FROM [httparchive:runs.2013_03_01_pages])