q1: x and y > 0 q2: x > 0 and y < 0 q3: x < 0 and y < 0 q4: x < 0 and y > 0 q1_uptime: q2_uptime: q3_uptime: q4_uptime: q1_speed: q1_speed: q1_speed: q1_speed: q1_variance: q1_variance: q1_variance: q1_variance: q2_variance, q3_variance, q4_variance, f01~f20_dis, f01~f20_rate, f01~f20_stroke