 {
                            value: calculateAverage(femaleData, 0),
                            groupId: 'female'
                        }],
                        universalTransition: {
                            enabled: true,
                            seriesKey: ['female', 'male'],
                            delay(idx, count) {
                                return (idx / count) * 1000;
                            }
                        }
                    }]
                };

          