{"HAPI":"2.0","status":{"code":1200,"message":"OK"},"title":"NOAA SWPC 3-hourly observed, estimated, and predicted Kp","description":"The Observed, Estimated, and Predicted 3-hour Planetary Kp-index is derived at the NOAA Space Weather Prediction Center using data from ground-based magnetometers via this URL: https://services.swpc.noaa.gov/products/noaa-planetary-k-index-forecast.json","startDate":"1994-01-01T00:00:00Z","stopDate":"2026-04-11T00:00:00Z","parameters":[{"fill":"null","length":22,"name":"Time","type":"isotime","units":"UTC"},{"fill":"-1","name":"KP_3H","type":"float","units":"KP Index","description":"KP for 3 hour windows, timestamp is for the end of the 3 hour window.  For example 06:00 timestamp is for 03:00 to 06:00"},{"fill":"null","name":"Kp_observed","type":"double","units":"unitless","description":"Observed 3-hourly Kp"},{"fill":"null","name":"Kp_estimated","type":"double","units":"unitless","description":"Estimated 3-hourly Kp"},{"fill":"null","name":"Kp_predicted","type":"double","units":"unitless","description":"Predicted 3-hourly Kp"},{"fill":"null","length":22,"name":"StartTime","type":"isotime","units":"UTC","description":"Start Time is for the start of the 3 hour window.  For example 03:00 timestamp is for 03:00 to 06:00"},{"fill":"null","length":22,"name":"MidTime","type":"isotime","units":"UTC","description":"Mid Time is for the middle of the 3 hour window.  For example 04:30 timestamp is for 03:00 to 06:00"},{"fill":"null","length":22,"name":"EndTime","type":"isotime","units":"UTC","description":"End Time is for the end of the 3 hour window.  For example 06:00 timestamp is for 03:00 to 06:00"}]}