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. 2013 Mar 3;2013:381410. doi: 10.1155/2013/381410

(c) Northern China

API c S2 S3 S4 AR ω S2 S3 S4 ARCH (α) GARCH (β) Θ1 Θ2 Q(5) Q(10)
Beijing, regional, and national

Beijing 104.17 (19.62) −20.64
(−3.87)
−19.15
(−3.56)
−15.07
(−2.81)
0.51
(22.21)
2026.18
(19.97)
−1758.96
(28.37)
−1461.45
(16.29)
−1338.17
(12.02)
0.40
(4.41)
0.32
(2.72)
0.02
(1.53)
0.88
(9.12)
2.15 5.12
Regional 82.30
(30.73)
−6.09 (−2.01) −2.59
(−0.85)
12.62
(3.78)
0.64
(33.77)
64.33
(1.01)
−36.96
(−0.84)
−0.85
(−0.03)
5.85
(0.25)
0.17* (1.65) 0.77
(5.34)
19.63 21.2
National 79.44
(35.24)
−6.51 (−2.51) −3.41
(−1.34)
11.42
(4.17)
0.67
(37.50)
76.88* (1.78) −51.53
(−1.57)
−11.91
(−0.53)
4.69
(0.20)
0.28
(2.74)
0.63
(4.54)
2.48 9.85

Huhehaote, regional, and national

Huhehaote 80.95
(13.80)
−27.22
(−4.33)
−19.58
(−2.95)
6.23
(0.96)
0.66
(32.39)
898.32
(4.03)
−864.09
(−4.13)
−838.20
(−4.15)
−737.24
(−4.24)
0.28
(3.53)
0.64
(6.73)
0.02
(2.70)
0.90
(20.13)
2.62 3.99
Regional 93.68
(26.43)
−9.93
(−2.64)
−4.88
(−1.20)
8.51* (1.77) 0.68
(40.40)
51.52
(0.54)
−41.16
(−0.51)
−14.73
(−0.25)
−3.80
(−0.09)
0.09
(1.41)
0.87
(7.30)
67.54 77.31
National 84.42
(36.09)
−10.99
(−4.48)
−5.72 (−2.26) 7.81
(2.91)
0.74
(50.63)
117.55 (2.04) −97.18* (−1.89) −59.62
(−1.49)
−26.66
(−0.80)
0.28
(4.85)
0.47
(3.47)
4.37 45.35

Shijiazhuang, regional, and national

Shijiazhuang 96.16
(26.51)
−9.98
(−2.65)
−9.87 (−2.25) 7.81* (1.73) 0.70
(38.97)
623.90
(3.41)
−435.56
(−2.60)
−235.27
(−1.18)
−113.38
(−0.78)
0.40
(5.11)
0.29
(3.24)
0.03
(3.78)
0.77
(14.77)
0.7 7.41
Regional 92.35
(28.08)
−11.59
(−3.28)
−5.65
(−1.52)
7.79* (1.89) 0.67
(39.52)
78.43
(0.89)
−64.45
(−0.87)
−34.74
(−0.63)
−12.10
(−0.38)
0.11 (1.99) 0.84
(7.93)
179.27 189.53
National 86.39
(33.54)
−11.82
(−4.47)
−5.79 (−2.12) 7.44 (2.53) 0.71
(48.40)
173.03* (1.83) −141.96* (−1.71) −89.57
(−1.41)
−35.47
(−0.70)
0.28
(4.59)
0.46
(2.67)
9.74* 26.89

Taiyuan, regional, and national

Taiyuan 89.844
(23.87)
−6.73* (−1.72) 2.23
(0.52)
12.92
(2.71)
0.65
(34.44)
Z −46.76* (−1.67) −25.40
(−0.96)
−13.77
(−0.53)
0.10
(5.03)
0.88
(35.53)
0.01
(1.15)
0.70
(5.13)
10.93* 21.65
Regional 92.47
(21.38)
−14.56
(−3.29)
−11.21 (−2.43) 6.28
(1.17)
0.71
(40.61)
96.69
(0.68)
−84.85
(−0.68)
−60.19
(−0.57)
−48.95
(−0.54)
0.11
(1.53)
0.84
(6.23)
76.46 82.57
National 84.62
(30.67)
−11.46
(−4.07)
−7.41 (−2.51) 7.27
(2.50)
0.74
(45.13)
165.94 (2.53) −136.82 (−2.29) −87.56* (−1.67) −56.59
(−1.19)
0.33
(4.69)
0.40
(3.22)
8.95 88.09

Tianjin, regional, and national

Tianjin 81.29
(34.31)
−6.20 (−2.14) −2.67
(−0.90)
11.63
(3.70)
0.57
(28.01)
63.60* (1.79) −24.23
(−0.90)
12.06
(0.56)
9.22
(0.43)
0.16 (2.53) 0.79
(10.37)
0.10
(6.36)
0.37
(3.42)
3.04 4.33
Regional 102.78
(21.72)
−19.49
(−4.07)
−16.91
(−3.39)
−8.40* (−1.71) 0.54
(24.46)
1831.75
(20.78)
−1584.64
(27.10)
−1259.84
(−20.64)
−1170.60
(−15.75)
0.41
(5.11)
0.20* (1.77) 3.13 9.96
National 93.47
(25.52)
−16.94
(−4.56)
−13.50
(−3.46)
−2.74
(−0.71)
0.57
(27.47)
820.45
(9.42)
−710.87
(−8.93)
−566.76
(−7.32)
−510.70
(−7.25)
0.42
(5.16)
0.23 (2.12) 4.54 5.02