Table 1. Emotions classified by EMOTIVE (total N) and space-time scan statistic results.

Statistical significant space-time clusters (i.e. spatio-temporal concentration of risk) of each emotion were found by the can statistic and were ordered according to the significance of the signal. Hence, cluster one of a particular emotion is the most likely cluster of that basic emotion and marked in bold. Note that FP refers to a false positive as identified from the tweet text.

Emotion (total N)	Cluster	Radius in km	Date of emergence	Number of days	Observed Cases	Expected Cases	Relative Risk	P value
Anger (1,952)	FP	0.001	Oct 23	2	52	16.26	3.20	<0.001
	1	11	Oct 28	2	63	24.37	2.59	<0.001
	2	1.1	Oct 28	2	14	1.61	8.73	<0.001
	3	4.1	Oct 27	1	14	2.33	6.02	<0.001
	4	0.02	Nov 1	1	6	0.26	23.57	<0.001
Confusion (603)	1	7.9	Oct 27	1	9	1.29	7.00	<0.01
Disgust (2,627)	1	3.2	Oct 28	2	42	14.05	2.99	<0.001
	2	7.6	Oct 25	5	233	165.05	1.41	<0.01
	3	1	Nov 1	1	6	0.29	20.96	<0.01
Fear (1,715)	1	2	Oct 26	3	51	15.39	3.31	<0.001
	2	3.9	Oct 28	3	84	44.36	1.89	<0.001
	3	6	Oct 23	2	52	23.41	2.22	<0.001
	4	2.1	Oct 30	1	13	2.21	5.87	<0.01
	5	16.5	Oct 28	2	138	89.45	1.54	<0.01
Sadness (5,457)	1	0.6	Oct 30	1	53	7.67	6.91	<0.001
	2	8.9	Oct 28	2	225	128.61	1.75	<0.001
	3	11.7	Oct 22	6	523	411.54	1.27	<0.001
	4	3.9	Oct 31	2	46	18.16	2.53	<0.001
	5	1.6	Oct 30	2	40	16.23	2.46	<0.05
Surprise (2,192)	1	10.5	Oct 29	1	40	5.10	7.84	<0.001
	2	0.2	Oct 30	1	17	1.54	11.02	<0.001
	3	0.1	Oct 27	1	9	0.48	18.61	<0.001
	4	1.4	Oct 29	1	15	2.28	6.58	<0.001
	5	16.1	Oct 22	4	381	290.60	1.31	<0.001
	6	0.2	Oct 29	1	8	0.87	9.21	<0.05