var meteoCharts = {};
			var meteoCompassLabels = {0: 'S', 90: 'V', 180: 'J', 270: 'Z', 360: 'S'};
			var meteoRangeMin = 1792706400000;
			var meteoRangeMax = 1792709091000;

			function meteoFormatTime(ms) {
				return moment(ms).format('HH:mm');
			}
			function meteoFormatDateTime(ms) {
				return moment(ms).format('DD.MM., HH:mm');
			}

			function meteoComputeExtremes(points) {
				var minPoint = null, maxPoint = null;
				for (var i = 0; i < points.length; i++) {
					var p = points[i];
					if (p.y === null || p.y === undefined) continue;
					if (!minPoint || p.y < minPoint.y) minPoint = p;
					if (!maxPoint || p.y > maxPoint.y) maxPoint = p;
				}
				return (minPoint || maxPoint) ? {min: minPoint, max: maxPoint} : null;
			}

			function meteoExtremeType(extremes, p) {
				if (!extremes || !p) return null;
				if (extremes.max && p.x === extremes.max.x && p.y === extremes.max.y) return 'max';
				if (extremes.min && p.x === extremes.min.x && p.y === extremes.min.y) return 'min';
				return null;
			}

			function meteoBuildDataset(spec) {
				var extremes = spec.highlightExtremes ? meteoComputeExtremes(spec.points) : null;
				var baseRadius = spec.pointRadius !== undefined ? spec.pointRadius : 0;
				var baseHoverRadius = baseRadius || 3;

				return {
					label: spec.label,
					data: spec.points,
					borderColor: spec.color,
					backgroundColor: spec.color,
					borderWidth: 2,
					tension: 0.15,
					fill: false,
					spanGaps: true,
					showLine: spec.showLine !== false,
					meteoUnit: spec.unit || '',
					meteoTooltipMode: spec.tooltipMode || 'default',
					meteoExtremes: extremes,
					pointRadius: function(context) {
						return meteoExtremeType(extremes, context.raw) ? Math.max(baseRadius, 5) : baseRadius;
					},
					pointHoverRadius: function(context) {
						return meteoExtremeType(extremes, context.raw) ? Math.max(baseHoverRadius, 7) : baseHoverRadius;
					},
					pointBackgroundColor: spec.color,
					pointBorderColor: '#ffffff',
					pointBorderWidth: function(context) {
						return meteoExtremeType(extremes, context.raw) ? 2 : 0;
					}
				};
			}

			function buildMeteoChart(canvasId, resetButtonId, specs, extraOptions) {
				var canvas = document.getElementById(canvasId);
				if (!canvas || typeof Chart === 'undefined' || !specs.length) {
					return;
				}
				extraOptions = extraOptions || {};

				var yScale = {title: {display: !!extraOptions.yLabel, text: extraOptions.yLabel || ''}};
				if (extraOptions.yMin !== undefined) yScale.min = extraOptions.yMin;
				if (extraOptions.yMax !== undefined) yScale.max = extraOptions.yMax;
				if (extraOptions.yMode === 'compass') {
					yScale.min = 0;
					yScale.max = 360;
					yScale.ticks = {
						stepSize: 90,
						callback: function(value) { return meteoCompassLabels[value] !== undefined ? meteoCompassLabels[value] : value; }
					};
				}

				meteoCharts[canvasId] = new Chart(canvas.getContext('2d'), {
					type: 'line',
					data: {datasets: specs.map(meteoBuildDataset)},
					options: {
						responsive: true,
						maintainAspectRatio: false,
						animation: false,
						interaction: {mode: 'nearest', axis: 'x', intersect: false},
						scales: {
							x: {
								type: 'linear',
								min: meteoRangeMin,
								max: meteoRangeMax,
								ticks: {maxTicksLimit: 8, callback: meteoFormatTime}
							},
							y: yScale
						},
						plugins: {
							legend: {display: true, position: 'top'},
							tooltip: {
								callbacks: {
									title: function(items) { return items.length ? meteoFormatDateTime(items[0].parsed.x) : ''; },
									label: function(context) {
										var ds = context.dataset;
										if (ds.meteoTooltipMode === 'windDirection') {
											return meteo_wind_direction_name(context.parsed.y);
										}
										var extremeType = meteoExtremeType(ds.meteoExtremes, context.raw);
										var suffix = extremeType === 'max' ? ' (dnešné maximum)' : (extremeType === 'min' ? ' (dnešné minimum)' : '');
										return ds.label + ': ' + context.parsed.y + ds.meteoUnit + suffix;
									}
								}
							},
							zoom: {
								pan: {enabled: true, mode: 'x'},
								zoom: {wheel: {enabled: true}, pinch: {enabled: true}, mode: 'x'},
								limits: {x: {min: meteoRangeMin, max: meteoRangeMax}}
							}
						}
					}
				});

				var resetButton = document.getElementById(resetButtonId);
				if (resetButton) {
					resetButton.addEventListener('click', function() {
						meteoCharts[canvasId].resetZoom();
					});
				}
			}
		
			$(document).ready(function() {
				buildMeteoChart('chart-temperature-canvas', 'chart-temperature-reset', [{"label":"Teplota (°C)","color":"#d6212a","points":[{"x":1792706402000,"y":4.2},{"x":1792706465000,"y":4.2},{"x":1792706529000,"y":4.3},{"x":1792706593000,"y":4.4},{"x":1792706657000,"y":4.3},{"x":1792706721000,"y":4.2},{"x":1792706785000,"y":4.2},{"x":1792706849000,"y":4.1},{"x":1792706913000,"y":4.1},{"x":1792706977000,"y":4},{"x":1792707041000,"y":3.9},{"x":1792707105000,"y":3.8},{"x":1792707169000,"y":3.7},{"x":1792707233000,"y":3.7},{"x":1792707297000,"y":3.7},{"x":1792707361000,"y":3.7},{"x":1792707425000,"y":3.7},{"x":1792707489000,"y":3.7},{"x":1792707553000,"y":3.7},{"x":1792707617000,"y":3.7},{"x":1792707681000,"y":3.6},{"x":1792707745000,"y":3.6},{"x":1792707809000,"y":3.6},{"x":1792707876000,"y":3.6},{"x":1792707937000,"y":3.5},{"x":1792708001000,"y":3.4},{"x":1792708065000,"y":3.3},{"x":1792708129000,"y":3.2},{"x":1792708193000,"y":3.1},{"x":1792708257000,"y":3},{"x":1792708321000,"y":3},{"x":1792708385000,"y":2.9},{"x":1792708449000,"y":2.9},{"x":1792708513000,"y":2.9},{"x":1792708577000,"y":2.9},{"x":1792708641000,"y":2.8},{"x":1792708705000,"y":2.8},{"x":1792708769000,"y":2.7},{"x":1792708835000,"y":2.7},{"x":1792708898000,"y":2.6},{"x":1792708961000,"y":2.6},{"x":1792709025000,"y":2.6},{"x":1792709089000,"y":2.6}],"highlightExtremes":true,"unit":" °C"},{"label":"Rosný bod (°C)","color":"#5b9f4a","points":[{"x":1792706402000,"y":3.9},{"x":1792706465000,"y":4.1},{"x":1792706529000,"y":4.2},{"x":1792706593000,"y":4.1},{"x":1792706657000,"y":4},{"x":1792706721000,"y":3.9},{"x":1792706785000,"y":3.9},{"x":1792706849000,"y":3.8},{"x":1792706913000,"y":3.8},{"x":1792706977000,"y":3.7},{"x":1792707041000,"y":3.8},{"x":1792707105000,"y":3.5},{"x":1792707169000,"y":3.6},{"x":1792707233000,"y":3.6},{"x":1792707297000,"y":3.6},{"x":1792707361000,"y":3.6},{"x":1792707425000,"y":3.6},{"x":1792707489000,"y":3.6},{"x":1792707553000,"y":3.6},{"x":1792707617000,"y":3.6},{"x":1792707681000,"y":3.5},{"x":1792707745000,"y":3.5},{"x":1792707809000,"y":3.5},{"x":1792707876000,"y":3.5},{"x":1792707937000,"y":3.4},{"x":1792708001000,"y":3.3},{"x":1792708065000,"y":3.2},{"x":1792708129000,"y":3.1},{"x":1792708193000,"y":3},{"x":1792708257000,"y":2.9},{"x":1792708321000,"y":2.9},{"x":1792708385000,"y":2.8},{"x":1792708449000,"y":2.8},{"x":1792708513000,"y":2.8},{"x":1792708577000,"y":2.8},{"x":1792708641000,"y":2.7},{"x":1792708705000,"y":2.7},{"x":1792708769000,"y":2.6},{"x":1792708835000,"y":2.6},{"x":1792708898000,"y":2.5},{"x":1792708961000,"y":2.5},{"x":1792709025000,"y":2.5},{"x":1792709089000,"y":2.5}],"highlightExtremes":false,"unit":" °C"}], {"yLabel":"\u00b0C"});
			});
		
				$(document).ready(function() {
					buildMeteoChart('chart-humidity-canvas', 'chart-humidity-reset', [{"label":"Vlhkosť (%)","color":"#ff9000","points":[{"x":1792706402000,"y":98},{"x":1792706465000,"y":99},{"x":1792706529000,"y":99},{"x":1792706593000,"y":98},{"x":1792706657000,"y":98},{"x":1792706721000,"y":98},{"x":1792706785000,"y":98},{"x":1792706849000,"y":98},{"x":1792706913000,"y":98},{"x":1792706977000,"y":98},{"x":1792707041000,"y":99},{"x":1792707105000,"y":98},{"x":1792707169000,"y":99},{"x":1792707233000,"y":99},{"x":1792707297000,"y":99},{"x":1792707361000,"y":99},{"x":1792707425000,"y":99},{"x":1792707489000,"y":99},{"x":1792707553000,"y":99},{"x":1792707617000,"y":99},{"x":1792707681000,"y":99},{"x":1792707745000,"y":99},{"x":1792707809000,"y":99},{"x":1792707876000,"y":99},{"x":1792707937000,"y":99},{"x":1792708001000,"y":99},{"x":1792708065000,"y":99},{"x":1792708129000,"y":99},{"x":1792708193000,"y":99},{"x":1792708257000,"y":99},{"x":1792708321000,"y":99},{"x":1792708385000,"y":99},{"x":1792708449000,"y":99},{"x":1792708513000,"y":99},{"x":1792708577000,"y":99},{"x":1792708641000,"y":99},{"x":1792708705000,"y":99},{"x":1792708769000,"y":99},{"x":1792708835000,"y":99},{"x":1792708898000,"y":99},{"x":1792708961000,"y":99},{"x":1792709025000,"y":99},{"x":1792709089000,"y":99}],"highlightExtremes":true,"unit":" %"}], {"yLabel":"%"});
				});
			
				$(document).ready(function() {
					buildMeteoChart('chart-pressure-canvas', 'chart-pressure-reset', [{"label":"Atmosférický tlak (hPa)","color":"#000000","points":[{"x":1792706402000,"y":1024.4},{"x":1792706465000,"y":1024.4},{"x":1792706529000,"y":1024.4},{"x":1792706593000,"y":1024.4},{"x":1792706657000,"y":1024.4},{"x":1792706721000,"y":1024.4},{"x":1792706785000,"y":1024.3},{"x":1792706849000,"y":1024.4},{"x":1792706913000,"y":1024.6},{"x":1792706977000,"y":1024.5},{"x":1792707041000,"y":1024.6},{"x":1792707105000,"y":1024.4},{"x":1792707169000,"y":1024.6},{"x":1792707233000,"y":1024.4},{"x":1792707297000,"y":1024.4},{"x":1792707361000,"y":1024.5},{"x":1792707425000,"y":1024.5},{"x":1792707489000,"y":1024.4},{"x":1792707553000,"y":1024.7},{"x":1792707617000,"y":1024.6},{"x":1792707681000,"y":1024.6},{"x":1792707745000,"y":1024.6},{"x":1792707809000,"y":1024.6},{"x":1792707876000,"y":1024.7},{"x":1792707937000,"y":1024.7},{"x":1792708001000,"y":1024.5},{"x":1792708065000,"y":1024.7},{"x":1792708129000,"y":1024.8},{"x":1792708193000,"y":1024.7},{"x":1792708257000,"y":1024.9},{"x":1792708321000,"y":1024.7},{"x":1792708385000,"y":1024.7},{"x":1792708449000,"y":1024.9},{"x":1792708513000,"y":1024.6},{"x":1792708577000,"y":1025},{"x":1792708641000,"y":1024.6},{"x":1792708705000,"y":1024.8},{"x":1792708769000,"y":1024.7},{"x":1792708835000,"y":1024.9},{"x":1792708898000,"y":1024.9},{"x":1792708961000,"y":1024.7},{"x":1792709025000,"y":1024.8},{"x":1792709089000,"y":1024.9}],"highlightExtremes":true,"unit":" hPa"}], {"yLabel":"hPa"});
				});
			
				$(document).ready(function() {
					buildMeteoChart('chart-wind-canvas', 'chart-wind-reset', [{"label":"Rýchlosť vetra (km\/h)","color":"#002f80","points":[{"x":1792706402000,"y":0},{"x":1792706465000,"y":0},{"x":1792706529000,"y":0},{"x":1792706593000,"y":0},{"x":1792706657000,"y":0},{"x":1792706721000,"y":0},{"x":1792706785000,"y":0},{"x":1792706849000,"y":0},{"x":1792706913000,"y":0},{"x":1792706977000,"y":0},{"x":1792707041000,"y":0},{"x":1792707105000,"y":0},{"x":1792707169000,"y":0},{"x":1792707233000,"y":0},{"x":1792707297000,"y":0},{"x":1792707361000,"y":0},{"x":1792707425000,"y":0},{"x":1792707489000,"y":0},{"x":1792707553000,"y":0},{"x":1792707617000,"y":0},{"x":1792707681000,"y":0},{"x":1792707745000,"y":0},{"x":1792707809000,"y":0},{"x":1792707876000,"y":0},{"x":1792707937000,"y":0},{"x":1792708001000,"y":0},{"x":1792708065000,"y":0},{"x":1792708129000,"y":0},{"x":1792708193000,"y":0},{"x":1792708257000,"y":0},{"x":1792708321000,"y":0},{"x":1792708385000,"y":0},{"x":1792708449000,"y":0},{"x":1792708513000,"y":0},{"x":1792708577000,"y":0},{"x":1792708641000,"y":0},{"x":1792708705000,"y":0},{"x":1792708769000,"y":0},{"x":1792708835000,"y":0},{"x":1792708898000,"y":0},{"x":1792708961000,"y":0},{"x":1792709025000,"y":0},{"x":1792709089000,"y":0}],"highlightExtremes":true,"unit":" km\/h"},{"label":"Náraz vetra (km\/h)","color":"#EF9856","points":[{"x":1792706402000,"y":0},{"x":1792706465000,"y":0},{"x":1792706529000,"y":0},{"x":1792706593000,"y":0},{"x":1792706657000,"y":0},{"x":1792706721000,"y":0},{"x":1792706785000,"y":0},{"x":1792706849000,"y":0},{"x":1792706913000,"y":0},{"x":1792706977000,"y":0},{"x":1792707041000,"y":0},{"x":1792707105000,"y":0},{"x":1792707169000,"y":0},{"x":1792707233000,"y":0},{"x":1792707297000,"y":0},{"x":1792707361000,"y":0},{"x":1792707425000,"y":0},{"x":1792707489000,"y":0},{"x":1792707553000,"y":0},{"x":1792707617000,"y":0},{"x":1792707681000,"y":0},{"x":1792707745000,"y":0},{"x":1792707809000,"y":0},{"x":1792707876000,"y":0},{"x":1792707937000,"y":0},{"x":1792708001000,"y":0},{"x":1792708065000,"y":0},{"x":1792708129000,"y":0},{"x":1792708193000,"y":0},{"x":1792708257000,"y":0},{"x":1792708321000,"y":0},{"x":1792708385000,"y":0},{"x":1792708449000,"y":0},{"x":1792708513000,"y":0},{"x":1792708577000,"y":0},{"x":1792708641000,"y":0},{"x":1792708705000,"y":0},{"x":1792708769000,"y":0},{"x":1792708835000,"y":0},{"x":1792708898000,"y":0},{"x":1792708961000,"y":0},{"x":1792709025000,"y":0},{"x":1792709089000,"y":0}],"highlightExtremes":true,"unit":" km\/h","showLine":false,"pointRadius":3}], {"yLabel":"km\/h"});
				});
			
				$(document).ready(function() {
					buildMeteoChart('chart-wind-direction-canvas', 'chart-wind-direction-reset', [{"label":"Smer vetra","color":"#002f80","points":[{"x":1792706402000,"y":352},{"x":1792706465000,"y":353},{"x":1792706529000,"y":355},{"x":1792706593000,"y":356},{"x":1792706657000,"y":356},{"x":1792706721000,"y":356},{"x":1792706785000,"y":356},{"x":1792706849000,"y":356},{"x":1792706913000,"y":356},{"x":1792706977000,"y":355},{"x":1792707041000,"y":355},{"x":1792707105000,"y":355},{"x":1792707169000,"y":355},{"x":1792707233000,"y":355},{"x":1792707297000,"y":355},{"x":1792707361000,"y":355},{"x":1792707425000,"y":355},{"x":1792707489000,"y":355},{"x":1792707553000,"y":353},{"x":1792707617000,"y":352},{"x":1792707681000,"y":349},{"x":1792707745000,"y":350},{"x":1792707809000,"y":354},{"x":1792707876000,"y":355},{"x":1792707937000,"y":356},{"x":1792708001000,"y":357},{"x":1792708065000,"y":358},{"x":1792708129000,"y":358},{"x":1792708193000,"y":358},{"x":1792708257000,"y":358},{"x":1792708321000,"y":358},{"x":1792708385000,"y":358},{"x":1792708449000,"y":358},{"x":1792708513000,"y":358},{"x":1792708577000,"y":358},{"x":1792708641000,"y":358},{"x":1792708705000,"y":358},{"x":1792708769000,"y":358},{"x":1792708835000,"y":358},{"x":1792708898000,"y":358},{"x":1792708961000,"y":358},{"x":1792709025000,"y":358},{"x":1792709089000,"y":358}],"highlightExtremes":false,"showLine":false,"pointRadius":3,"tooltipMode":"windDirection"}], {"yMode":"compass"});
				});
			
				$(document).ready(function() {
					buildMeteoChart('chart-solar-radiation-canvas', 'chart-solar-radiation-reset', [{"label":"Slnečné žiarenie (W\/m2)","color":"#ffb92f","points":[{"x":1792706402000,"y":0},{"x":1792706465000,"y":0},{"x":1792706529000,"y":0},{"x":1792706593000,"y":0},{"x":1792706657000,"y":0},{"x":1792706721000,"y":0},{"x":1792706785000,"y":0},{"x":1792706849000,"y":0},{"x":1792706913000,"y":0},{"x":1792706977000,"y":0},{"x":1792707041000,"y":0},{"x":1792707105000,"y":0},{"x":1792707169000,"y":0},{"x":1792707233000,"y":0},{"x":1792707297000,"y":0},{"x":1792707361000,"y":0},{"x":1792707425000,"y":0},{"x":1792707489000,"y":0},{"x":1792707553000,"y":0},{"x":1792707617000,"y":0},{"x":1792707681000,"y":0},{"x":1792707745000,"y":0},{"x":1792707809000,"y":0},{"x":1792707876000,"y":0},{"x":1792707937000,"y":0},{"x":1792708001000,"y":0},{"x":1792708065000,"y":0},{"x":1792708129000,"y":0},{"x":1792708193000,"y":0},{"x":1792708257000,"y":0},{"x":1792708321000,"y":0},{"x":1792708385000,"y":0},{"x":1792708449000,"y":0},{"x":1792708513000,"y":0},{"x":1792708577000,"y":0},{"x":1792708641000,"y":0},{"x":1792708705000,"y":0},{"x":1792708769000,"y":0},{"x":1792708835000,"y":0},{"x":1792708898000,"y":0},{"x":1792708961000,"y":0},{"x":1792709025000,"y":0},{"x":1792709089000,"y":0}],"highlightExtremes":true,"unit":" W\/m2"}], {"yLabel":"W\/m2","yMin":0});
				});
			
				$(document).ready(function() {
					buildMeteoChart('chart-uv-canvas', 'chart-uv-reset', [{"label":"UV žiarenie","color":"#802674","points":[{"x":1792706402000,"y":0},{"x":1792706465000,"y":0},{"x":1792706529000,"y":0},{"x":1792706593000,"y":0},{"x":1792706657000,"y":0},{"x":1792706721000,"y":0},{"x":1792706785000,"y":0},{"x":1792706849000,"y":0},{"x":1792706913000,"y":0},{"x":1792706977000,"y":0},{"x":1792707041000,"y":0},{"x":1792707105000,"y":0},{"x":1792707169000,"y":0},{"x":1792707233000,"y":0},{"x":1792707297000,"y":0},{"x":1792707361000,"y":0},{"x":1792707425000,"y":0},{"x":1792707489000,"y":0},{"x":1792707553000,"y":0},{"x":1792707617000,"y":0},{"x":1792707681000,"y":0},{"x":1792707745000,"y":0},{"x":1792707809000,"y":0},{"x":1792707876000,"y":0},{"x":1792707937000,"y":0},{"x":1792708001000,"y":0},{"x":1792708065000,"y":0},{"x":1792708129000,"y":0},{"x":1792708193000,"y":0},{"x":1792708257000,"y":0},{"x":1792708321000,"y":0},{"x":1792708385000,"y":0},{"x":1792708449000,"y":0},{"x":1792708513000,"y":0},{"x":1792708577000,"y":0},{"x":1792708641000,"y":0},{"x":1792708705000,"y":0},{"x":1792708769000,"y":0},{"x":1792708835000,"y":0},{"x":1792708898000,"y":0},{"x":1792708961000,"y":0},{"x":1792709025000,"y":0},{"x":1792709089000,"y":0}],"highlightExtremes":true}], {"yMin":0});
				});
			
				$(document).ready(function() {
					buildMeteoChart('chart-rain-canvas', 'chart-rain-reset', [{"label":"Zrážky (mm)","color":"#008fbf","points":[{"x":1792706402000,"y":19.101},{"x":1792706465000,"y":0},{"x":1792706529000,"y":0},{"x":1792706593000,"y":0},{"x":1792706657000,"y":0},{"x":1792706721000,"y":0},{"x":1792706785000,"y":0},{"x":1792706849000,"y":0},{"x":1792706913000,"y":0},{"x":1792706977000,"y":0},{"x":1792707041000,"y":0},{"x":1792707105000,"y":0},{"x":1792707169000,"y":0},{"x":1792707233000,"y":0},{"x":1792707297000,"y":0},{"x":1792707361000,"y":0},{"x":1792707425000,"y":0},{"x":1792707489000,"y":0},{"x":1792707553000,"y":0},{"x":1792707617000,"y":0},{"x":1792707681000,"y":0},{"x":1792707745000,"y":0},{"x":1792707809000,"y":0},{"x":1792707876000,"y":0},{"x":1792707937000,"y":0},{"x":1792708001000,"y":0},{"x":1792708065000,"y":0},{"x":1792708129000,"y":0},{"x":1792708193000,"y":0},{"x":1792708257000,"y":0},{"x":1792708321000,"y":0},{"x":1792708385000,"y":0},{"x":1792708449000,"y":0},{"x":1792708513000,"y":0},{"x":1792708577000,"y":0},{"x":1792708641000,"y":0},{"x":1792708705000,"y":0},{"x":1792708769000,"y":0},{"x":1792708835000,"y":0},{"x":1792708898000,"y":0},{"x":1792708961000,"y":0},{"x":1792709025000,"y":0},{"x":1792709089000,"y":0}],"highlightExtremes":false,"unit":" mm"}], {"yLabel":"mm","yMin":0});
				});
			
			$('.modal').on('hide.bs.modal', function() {
				var memory = $(this).html();
				$(this).html(memory);
			});
		
		function meteo_wind_direction_name(wind_direction) {
			if (wind_direction >= 0.00 && wind_direction <= 11.25) {
				ret = 'S';
			} else if (wind_direction > 11.25 && wind_direction <= 33.75) {
				ret = 'SSV';
			} else if (wind_direction > 33.75 && wind_direction <= 56.25) {
				ret = 'SV';
			} else if (wind_direction > 56.25 && wind_direction <= 78.75) { // 67.5
				ret = 'VSV';
			} else if (wind_direction > 78.75 && wind_direction <= 101.25) { // 90
				ret = 'V';
			} else if (wind_direction > 101.25 && wind_direction <= 123.75) { //112.5
				ret = 'VJV';
			} else if (wind_direction > 123.75 && wind_direction <= 146.25) { // 135
				ret = 'JV';
			} else if (wind_direction > 146.25 && wind_direction <= 168.75) { // 157.5
				ret = 'JJV';
			} else if (wind_direction > 168.75 && wind_direction <= 191.25) { // 180
				ret = 'J';
			} else if (wind_direction > 191.25 && wind_direction <= 213.75) { // 202.5
				ret = 'JJZ';
			} else if (wind_direction > 213.75 && wind_direction <= 236.25) { // 225
				ret = 'JZ';
			} else if (wind_direction > 236.25 && wind_direction <= 258.75) { // 247.5
				ret = 'ZJZ';
			} else if (wind_direction > 258.75 && wind_direction <= 281.25) { // 270
				ret = 'Z';
			} else if (wind_direction > 281.25 && wind_direction <= 303.75) { // 292.5
				ret = 'ZSZ';
			} else if (wind_direction > 303.75 && wind_direction <= 326.25) { // 315
				ret = 'SZ';
			} else if (wind_direction > 326.25 && wind_direction <= 348.75) { // 337.5
				ret = 'SSZ';
			} else if (wind_direction > 348.75 && wind_direction <= 360.0) { // 337.5
				ret = 'S';
			} else {
				return '';
			}

			return ret;
		}