Earth, Planets and Space

Table 4 The values of reference height and sharpness factor during winter, equinox and summer seasons

From: Seasonal variations of nighttime D-region ionosphere in 2013 solar maximum observed from a low-latitude station

Values	Winter		Equinox		Summer
	h ^′ (km)	β (k m ⁻¹)	h ^′ (km)	β (k m ⁻¹)	h ^′ (km)	β (k m ⁻¹)
Min	82.2	0.49	81.1	0.46	81.2	0.43
Max	86.9	0.65	86.9	0.66	87.5	0.66
Mean	84.4	0.57	83.7	0.55	83.3	0.55
SD	± 1.5	± 0.07	± 1.5	± 0.06	± 1.8	± 0.06

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