There’s too much data here – so I’m going to simply provide the numbers and you can extrapolate what you want from it. In the four regions there's still a job to do to catch up with the “home locals” - which, in most cases are very dominant. On a positive note: three out of four regional stations beat RTE1 into second position.

There's also a table of all the 'franchises' - it’s interesting to see the totality of the radio market and how they all stand - comparisons are unwise as the different franchises have different populations etc.  

Could not load widget with the id 50.

And finally .... the table -a bit tight for space so - the columns marked * is year on year comparisons, the others are book on book comparisons.  

Area Franchise 2015 Q4   2015 Q3   2014 Q4   +/-* ch %* +/- ch %
Regional SE Beat 97 25%   95 24%   99 25%   -2 -2% 2 2%
Regional SW Spin South West 93 22%   95 23%   90 21%   3 3% -2 -2%
Regional NW iRadio NW 128 23%   125 22%   118 21%   10 8% 3 2%
Regional NE iRadio NE 100 15%   101 15%   100 15%   0 0% -1 -1%
Multi City Classic Hits 4FM 132 6%   128 6%   123 6%   9 7% 4 3%
Dub Commute Radio Nova 100FM 77 6%   81 6%   71 6%   6 8% -4 -5%
Dublin FM104 186 18%   187 18%   194 19%   -8 -4% -1 -1%
Dublin Dublin's 98FM 103 10%   110 9%   106 10%   -3 -3% -7 -6%
Dublin Q102 73 7%   97 10%   89 9%   -16 -18% -24 -25%
Dublin Sunshine 106.8 56 5%   43 4%   57 6%   -1 -2% 13 30%
Dublin Spin 1038 149 14%   142 14%   147 14%   2 1% 7 5%
Dublin Phantom 105.2FM 19 2%   20 2%   20 2%   -1 -5% -1 -5%
Cork C103 65 16%   64 16%   69 17%   -4 -6% 1 2%
Cork Cork's 96FM 113 27%   114 27%   130 31%   -17 -13% -1 -1%
Cork Cork's Red FM 133 32%   125 32%   99 24%   34 34% 8 6%
Local Galway Galway Bay FM 68 35%   63 33%   68 35%   0 0% 5 8%
Local Clare Clare FM 43 49%   42 47%   42 47%   1 2% 1 2%
Local Wicklow East Coast FM 30 28%   31 29%   35 32%   -5 -14% -1 -3%
Local Nth Donegal Highland Radio 58 59%   61 62%   62 62%   -4 -6% -3 -5%
Local Kilk/Carlow KCLR 96FM 36 31%   41 34%   47 40%   -11 -23% -5 -12%
Local Kildare KFM 40 24%   39 24%   37 23%   3 8% 1 3%
Local Limerick Limerick Live 95 71 47%   62 41%   60 40%   11 18% 9 15%
Local Louth/Meath LMFM 70 30%   72 31%   62 27%   8 13% -2 -3%
Local Mayo Mid West Radio 54 55%   57 58%   61 62%   -7 -11% -3 -5%
Local Laois/Off/WM Midlands 103 66 34%   64 34%   64 34%   2 3% 2 3%
Local Northern Sound 43 43%   45 45%   42 42%   1 2% -2 -4%
Local Donegal/Leit Ocean FM 35 45%   36 45%   36 44%   -1 -3% -1 -3%
Local Kerry Radio Kerry 55 48%   58 50%   63 54%   -8 -13% -3 -5%
Local Shannonside 46 50%   44 48%   44 47%   2 5% 2 5%
Local Wexford South East Radio 46 41%   48 42%   46 40%   0 0% -2 -4%
Local Tipperary Tipp FM 41 33%   42 34%   45 36%   -4 -9% -1 -2%
Local Waterford WLR FM 36 39%   38 41%   42 45%   -6 -14% -2 -5%