The Study of Frost Occurrence in Free State Province of South Africa

Table 5

Frost-free duration (in days) at different probability levels (20%, 50%, and 80%) and thresholds (2°C, 0°C, and −2°C).

Station	20%			50%			80%
	2°C	0°C	−2°C	2°C	0°C	−2°C	2°C	0°C	−2°C
Bethlehem	179	218	240	200	235	260	220	248	276
Bloemfontein	175	201	244	194	222	259	212	243	273
Bothaville	209	243	269	231	256	297	254	270	325
Fauresmith	185	221	262	207	246	287	232	271	314
Ficksburg	183	216	261	202	238	278	225	260	295
Frankfort	183	215	238	202	232	253	221	245	268
Virginia	213	245	278	231	263	293	246	277	308
Wepener	173	198	226	189	221	245	207	239	265
Zastron	173	195	229	187	218	247	201	237	265