Period	Lower bound	Upper bound	Stations with Lag-1 Serial Correlation
Annual	−0.314	0.314	0.565⁴, 0.564⁵, 0.407⁸, 0.377⁹
Irrigation	−0.314	0.314	0.321⁴, 0.393⁵
Spring	−0.314	0.314	−0.330¹¹
Autumn	−0.314	0.314	0.368⁴, 0.341⁸
Months
October	−0.314	0.314	0.323⁷
December	−0.314	0.314	0.358⁵
January	−0.314	0.314	0.372⁶, 0.383⁷, 0.428¹⁰, 0.367¹¹
March	−0.314	0.314	0.333⁶
May	−0.314	0.314	−0.328¹¹
August	−0.314	0.314	0.355⁴