Biometer values at Pretoria

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Table 1.9a The amount of UVB measured as
the erythema dose in Pretoria from 1994 till 1998

Monthly mean daily biometer values at Pretoria
Month	1994	1995	1996	1997	1998
Jan	24.98	24.42	23.78	25.2	27.63
Feb	22.11	23.34	19.78	24.57	24.17
March	21.38	17.21	19.82	15.99	21.38
April	15.39	13.65	13.4	15.77	16.02
May	10.69	9.45	9.23	10.81	10.58
June	8.24	7.97	7.67	8.61	8.31
July	8.53	8.49	7.44	9.04	7.97
August	11.54	11.1	10.19	11.7	11.86
Sept	16.16	15.75	15.45	14.98	13.55
Oct	20.25	17.19	18.35	18.88	18.32
Nov	21.16	21.99	20.76	23.61	22.54
Dec	26.15	26.72	29.98	27.96	23.87