全国主要城市的经纬度等数值信息（没有数据的城市只要找相近城市误差不会大）。
经纬度没有换算精确到点上了，事实上差别也比较微小，另外磁偏角每年都会变化的，不过变化幅度也相当小，所以误差可以忽略不计。
范例：Latitude（纬度）；Longitide（经度）；Magnetic Declination（磁偏角）；Time Zone（时区）
Name:china,beijing（北京）
Latitude:39.92
Longitide:-116.42
Magnetic Declination:-6.18
Time Zone:-8.00
Name:china,changchun（长春）
Latitude:43.90
Longitide:-125.30
Magnetic Declination:-9.30
Time Zone:-8.00
Name:china,changsha（长沙）
Latitude:28.20
Longitide:-112.90
Magnetic Declination:3.70
Time Zone:-8.00
Name:china,chengdu（成都）
Latitude:30.60
Longitide:-104.10
Magnetic Declination:-1.47
Time Zone:-7.00
Name:china,dalian（大连）
Latitude:38.90
Longitide:-121.60
Magnetic Declination:-7.21
Time Zone:-8.00
Name:china,datong（大同）
Latitude:40.10
Longitide:-113.20
Magnetic Declination:-5.24
Time Zone:-8.00
Name:china,fuzhou（福州）
Latitude:26.00
Longitide:-119.30
Magnetic Declination:-3.42
Time Zone:-8.00
Name:china,guangzhou（广州）
Latitude:23.10
Longitide:-113.20
Magnetic Declination:-2.17
Time Zone:-8.00
Name:china,guilin（桂林）
Latitude:25.20
Longitide:-110.20
Longitide:-2.12
Time Zone:-8.00
Name:china,guiyang（贵阳）
Latitude:26.60
Longitide:-106.70
Magnetic Declination:-1.51
Time Zone:-7.00
Name:china,haerbin（哈尔滨）
Latitude:45.70
Longitide:-126.60
Magnetic Declination:-10.16
Time Zone:-8.00
Name:china,haikou（海口）
Latitude:20.00
Longitide:-110.30
Longitide:-1.28
Time Zone:-8.00
Name:china,hangzhou（杭州）
Latitude:30.20
Longitide:-120.10
Magnetic Declination:-4.49
Time Zone:-8.00
Name:china,hefei（合肥）
Latitude:31.80
Longitide:-117.30
Magnetic Declination:-4.42
Time Zone:-8.00
Name:china,huhehaote（呼和浩特）
Latitude:40.80
Longitide:-111.70
Magnetic Declination:-5.30
Time Zone:-8.00
Name:china,jinan（济南）
Latitude:36.60
Longitide:-117.00
Longitide:-5.44
Time Zone:-8.00
Name:china,kunming（昆明）
Latitude:25.00
Longitide:-102.70
Magnetic Declination:-1.13
Time Zone:-8.00
Name:china,lanzhou（兰州）
Latitude:36.00
Longitide:-103.70
Magnetic Declination:-2.40
Time Zone:-7.00
Name:china,lasa（拉萨）
Latitude:29.60
Longitide:-91.10
Magnetic Declination:-0.30
Time Zone:-6.00
Name:china,nanchang（南昌）
Latitude:28.60
Longitide:-115.90
Magnetic Declination:-3.45
Time Zone:-8.00
Name:china,nanjing（南京）
Latitude:32.00
Longitide:-118.70
Magnetic Declination:-5.10
Time Zone:-8.00
Name:china,shanghai（上海）
Latitude:31.2
Longitide:-121.40
Longitide:-5.16
Time Zone:-8.00
Name:china,shenyang（沈阳）
Latitude:41.80
Longitide:-123.40
Magnetic Declination:-9.29
T
ime Zone:-8.00
Name:china,wuhan（武汉）
Latitude:30.50
Longitide:-114.20
Magnetic Declination:-3.48
Time Zone:-8.00
Name:china,xian（？？）
Latitude:34.20
Longitide:-108.90
Magnetic Declination:-3.12
Time Zone:-7.00