let temperatures = [["Apr 26, 2019, 4:28:28 AM", 25.509],
                    ["Apr 26, 2019, 4:28:38 AM", 26.509],
                    ["Apr 26, 2019, 4:28:48 AM", 25.590],
                    ["Apr 26, 2019, 4:28:58 AM", 25.515],
                    ["Apr 26, 2019, 4:29:08 AM", 24.998]]

let pressures =     [["Apr 26, 2019, 4:28:30 AM", 60.509],
                     ["Apr 26, 2019, 4:28:41 AM", 60.509],
                     ["Apr 26, 2019, 4:28:50 AM", 60.590]
                     ["Apr 26, 2019, 4:28:57 AM", 60.998]]