struct scan_header{
	char inst[16];
	char source[16];
	char locat[32];
	char envir[16];
	int year;
	int day;
	char date[16];
	char operat[16];
	char meas_type[16];
	char meas_purp[16];
	int n_scan;
	int n_col;
	int n_row;
	int n_chan;
	float start_time;				
	char start_time_unit[8];
	float stop_time;				
	char stop_time_unit[8];
	float start_wl;				
	char start_wl_unit[8];
	float stop_wl;				
	char stop_wl_unit[8];
	float inc_wl;				
	char inc_wl_unit[8];
	char lamp_hs[16];
	char lamp_ps[16];
	float dark_sig;				
	char dark_sig_unit[16];
	float filter_temp;			
	char filter_temp_unit[8];
	float detect_temp;			
	char detect_temp_unit[8];
	float motor_temp;			
	char motor_temp_unit[8];
	float housing_temp;			
	char housing_temp_unit[8];
	float pmt_volt;			
	char pmt_volt_unit[8];
	float int_time;				
	char int_time_unit[8];
	float dead_time;			
	char dead_time_unit[8];
	float stray_wl;
	char stray_wl_unit[8];
	float stray_sig;
	char stray_sig_unit[8];
	char comments[32];
	char data_file[16];
	char format_prog[32];
	char format_date[16];
	char diffuse_file[16];
	char total_file[16];
	char wl_file[16];
	char irrad_file[16];
	char resp_file[16];
	char unc_file[16];
	char analy_prog[32];
	char analy_date[16];
};

struct label_unit{
	char wl_unit[8];
	char time_unit[8];
	char sig_unit[8];
	char irrad_unit[24];
	char resp_unit[24];
	char dark_sig_unit[24];
	char darkj_sig_unit[24];
	char darkt_sig_unit[24];
	char filt_temp_unit[24];
	char int_time_unit[24];
};

struct lamp_header{
	char lamp[8];
	float cur;
	char cur_unit[8];
	float volt;
	char volt_unit[8];
	float dist;
	char dist_unit[8];
	float max_gonio;
	float avg_gonio;
	char orient[16];
	char lamp_hs[16];
	char cal_date[16];
	int n_col;
	int n_row;
};

struct SERC_data{
	char inst[8];
	char date[8];
	char time[8];
	float data[21];
	int data_sets;
	int status;
	float temp;
	int fsc;
};

struct unc_data{
	float radius;
	float curr_sys;
	float curr_rand;
	float wl_c0;
	float wl_c1;
	float wl_c2;
	float perp;
	float center;
	float dist;
};