如何正确的理解EA测试报告

extern double tp1 = 50; 外部定义的可变量，并赋初始值，浮点型数据TP1=50extern double sl1 = 50;
extern int p1 = 10; 外部定义的可变量，并赋初始值，整型数据P1=10
extern int x12 = 100;
extern int x22 = 100;
extern int x32 = 100;
extern int x42 = 100;
extern double tp2 = 50;
extern double sl2 = 50;
extern int p2 = 20;
extern int x13 = 100;
extern int x23 = 100;
extern int x33 = 100;
extern int x43 = 100;
extern double tp3 = 50;
extern double sl3 = 50;
extern int p3 = 20;
extern int x14 = 100;
extern int x24 = 100;
extern int x34 = 100;
extern int x44 = 100;
extern int p4 = 20;
extern int pass = 1;
extern double lots = 0.01;
extern int mn = 888;
static int prevtime = 0;定义静态变量，整型数据并赋值
static double sl = 10;
static double tp = 10;