# Data for figure 4
Temperature (K),Normalized Intensity r (a.u),FWHM (A-1)
1.50E+01,6.84E-01,8.71E-03
3.00E+01,5.92E-01,9.44E-03
4.00E+01,3.53E-01,1.35E-02
4.50E+01,1.88E-01,1.84E-02
4.70E+01,1.29E-01,2.16E-02
4.90E+01,9.60E-02,2.90E-02
5.10E+01,6.06E-02,2.90E-02
5.50E+01,4.40E-03,5.76E-02

# data for supplementary figure 4
Temperature (K),Normalized Intensity r (a.u),FWHM (A-1)
1.50E+01,6.84E-01,8.71E-03
3.00E+01,5.92E-01,9.44E-03
4.00E+01,3.53E-01,1.35E-02
4.50E+01,1.88E-01,1.84E-02
4.70E+01,1.29E-01,2.16E-02
4.90E+01,9.60E-02,2.90E-02
5.10E+01,6.06E-02,2.90E-02
5.50E+01,4.40E-03,5.76E-02