if (Double.isNaN(this.minimumRangeValue)) {
                        this.minimumRangeValue = m;
                        this.minimumRangeValueRow = r;
                        this.minimumRangeValueColumn = c;
                    }
                    else {
                        if (m < this.minimumRangeValue) {
                            this.minimumRangeValue = m;
                            this.minimumRangeValueRow = r;
                            this.minimumRangeValueColumn = c;