年份

预测值/万吨

标准差

95%置信区间

2016

37.5248

0.5033

(36.5384,38.5111)

2017

39.1784

1.0010

(37.2165,41.1403)

2018

40.6586

1.5064

(37.7061,43.6111)

2019

42.0140

1.9984

(38.0973,45.9307)