TV appearance ranking 2008 (idols/talents)

Prime time broadcast (from ~19:00 to ~22:00)
#1 Satoda Mai - 58 programs (47,2%) - 81 hours 18 minutes (58,2%)
#4 Yaguchi Mari – 44 programs (34,9%) - 60 h 42 min (50,2%)
#12 Yoshizawa Hitomi – 22 programs (62,9%) - 34 h 08 min (74,6%)
#44 Fujimoto Miki – 9 programs - 13 h 45 min

All broadcast times
#5 Satoda Mai – 123 programs -139 h 46 min
#10 Yaguchi Mari – 126 programs - 120 h 50 min
#37 Matsuura Aya – 41 programs - 49 h 06 min
#43 Yoshizawa Hitomi – 35 programs - 45 h 47 min
#91 Berryz Koubou – 127 programs - 20 h 17 min

So, when Yossi is on TV She useally is on Prime time shows xD

Source