## Loading required package: sp
## rgdal: version: 1.4-3, (SVN revision 828)
## Geospatial Data Abstraction Library extensions to R successfully loaded
## Loaded GDAL runtime: GDAL 2.2.3, released 2017/11/20
## Path to GDAL shared files: /usr/share/gdal/2.2
## GDAL binary built with GEOS: TRUE
## Loaded PROJ.4 runtime: Rel. 4.9.3, 15 August 2016, [PJ_VERSION: 493]
## Path to PROJ.4 shared files: (autodetected)
## Linking to sp version: 1.3-1
## Parsed with column specification:
## cols(
## 지점 = col_double(),
## 시작일 = col_date(format = ""),
## 종료일 = col_date(format = ""),
## 지점명 = col_character(),
## 관리관서 = col_character(),
## 위도 = col_double(),
## 경도 = col_double(),
## `노장해발고도(m)` = col_double(),
## `기압계(관측장비지상높이(m))` = col_logical(),
## `기온계(관측장비지상높이(m))` = col_logical(),
## `풍속계(관측장비지상높이(m))` = col_double(),
## `강우계(관측장비지상높이(m))` = col_logical()
## )
## Parsed with column specification:
## cols(
## 지점 = col_double(),
## 시작일 = col_date(format = ""),
## 종료일 = col_date(format = ""),
## 지점명 = col_character(),
## 관리관서 = col_character(),
## 위도 = col_double(),
## 경도 = col_double(),
## `노장해발고도(m)` = col_double(),
## `기압계(관측장비지상높이(m))` = col_double(),
## `기온계(관측장비지상높이(m))` = col_double(),
## `풍속계(관측장비지상높이(m))` = col_double(),
## `강우계(관측장비지상높이(m))` = col_double()
## )
## id startDate endDate
## Min. : 90.0 Min. :1904-04-08 Min. :1978-05-01
## 1st Qu.:538.0 1st Qu.:1997-06-29 1st Qu.:2007-09-13
## Median :666.0 Median :2009-02-01 Median :2011-12-19
## Mean :647.7 Mean :2004-11-13 Mean :2011-03-06
## 3rd Qu.:811.0 3rd Qu.:2014-12-12 3rd Qu.:2015-07-13
## Max. :969.0 Max. :2019-05-02 Max. :2019-05-02
## NA's :587
## names alt type
## Length:1731 Min. : 1.00 Length:1731
## Class :character 1st Qu.: 25.71 Class :character
## Mode :character Median : 68.99 Mode :character
## Mean : 151.19
## 3rd Qu.: 170.22
## Max. :1673.00
##