Another thing I have noticed is that Ayr and Gourock have an odd imbalance of their express services today:
From Ayr:
0650, 0741, 0829, 0851, 1450, 1525, 1548, 1623, 1654, 1724, 1753, 1825, 1850
From Gourock:
0954, 1154, 1354, 1454, 1524, 1549, 1627, 1654, 1724, 1824, 1948
From Glasgow...