1-59 min => 10 Baht/min.

60-119 min (1hr) => 9 Baht/min.

120-179 min (2hrs) => 8 Baht/min.

180-239 min (3hrs) => 7 Baht/min.

240-299 min (4hrs) => 6 Baht/min.

300 min+ (5hrs) => 5 Baht/min.