The following systolic blood pressure data were collected to study whether systolic blood pressure varied by time of day. For each patient, systolic blood pressure was measured at 8AM, 12PM and 4PM. The study includes 22 patients who died and 43 patients who were discharged home. The data are shown below.

Died Discharged Home
systolic_8AM systolic_12PM systolic_4PM systolic_8AM systolic_12PM systolic_4PM
137 137 138 54 54 58
160 161 163 139 140 140
125 126 126 126 127 127
142 142 143 124 124 120
136 136 137 100 100 100
100 100 100 117 118 118
85 86 87 55 59 63
106 106 107 53 69 71
103 103 103 123 123 134
111 111 112 110 110 115
112 112 113 108 108 109
144 144 144 73 74 76
115 115 116 101 102 102
141 141 141 95 96 96
104 105 105 129 129 130
127 128 128 78 80 85
132 133 133 144 147 148
170 170 175 120 120 121
184 189 209 100 101 101
123 123 124 53 55 53
119 119 119 98 98 98
165 167 168 128 129 120
96 97 97
50 48 51
105 99 99
82 84 85
88 89 90
134 134 135
49 59 60
94 94 95
105 105 101
22 24 30
109 109 110
113 113 114
136 134 136
133 138 138
125 125 125
116 116 117
131 132 132
109 109 109
91 92 90
48 48 49
118 121 121