2
37 Sankt_Andreasberg 1,37e-6   3,0e-5    9,95e4
42 Herzberg          1,6858e-7 1,2505e-2 1,1881e5
38 Herzberg_Test     1,35e-7   0,06e-2   1,065e5  

// This file "calibration.dat" must be in the same folder as 
// the executable program.
//
// The first line contains the number of sensors, minimum is 1, maximum is 3.
// The following 3 lines contain calibration data for the sensors,
// in this order:
// Serial_Number  Location_Name  c  b  a   
//
// Counts to Lux conversion is done by this formula:
// lux = c * (b * (a * exp(counts / a) - 1.0) + counts) 
// which is the same as
// lux = a*b*c*exp(counts / a) - b*c + c*counts
//
//
// For each sensor there must be a folder named "SNxx" in the same folder
// as the executable program, where "xx" stands for the serial number
// of the sensor. For example if the serial number is 37, the name of
// the folder is "SN37".
// Copy your data files to these folders.
//
// Two types of data files are supported:
//
// 1. Text files, for example "20110216.txt", which contain data
//    lines like this:
//    2011-02-16 00:00:01  15.3   71744 2     0.00l 
//
// 2. CSV files, for example "20110216-0000.csv", which contain
//    data lines like this:
//    12.02.2011;00:00:05;2,4;°C;54656;0;0;ok;
//    The first line in the file is not read !
//    If the file doesn't begin at time 00:00, please rename the file
//    so that the filename contains "-0000"