Table 3. Overview of training point strata encoding, sample sizes and sample weights.

Stratum code	Nightlights change	Land cover change	Human pressure	Population size	Standard deviation	Sample size	Sample weight
0	outside land mask (permanent water/ice)			–	–	–	–
1	>/<	0	100	23,517,852,472	72.02	7,738	3,039,268
2	>/<	1	0	13,870,136	70.29	204	67,991
3	>/<	1	100	174,111,464	60.17	247	704,905
4	>/<	2	0	11,797,016	58.52	203	58,113
5	>/<	2	100	163,219,120	59.30	243	671,684
7	>1	0	100	529,097,288	53.98	327	1,618,035
9	>1	1	100	3,092,984	50.65	201	15,388
11	>1	2	100	2,689,992	48.41	201	13,383
13	<−1	0	100	270,521,584	55.27	267	1,013,189
15	<−1	1	100	1,914,936	52.32	200	9,575
17	<−1	2	100	1,278,024	49.04	200	6,390
18	any other combination			6,670,463,000	76.44	2,469	2,701,686

Notes:

Nightlights: >/<, values in the range −1 to 1 ( $\mathrm{n}\mathrm{W}.\mathrm{c}{\mathrm{m}}^{-2}.\mathrm{s}{\mathrm{r}}^{-\mathrm{1)}}$); >1, values greater than 1; <1, values less than −1.

Land cover code: 0, any other LC type or change than 1 or 2; 1, forest/wetland to grassland/cropland; 2, grassland/cropland to forest/wetland.

Human pressure: 0, all human pressure variables equal to zero; 100, any one of the human pressure variables >0.