190 86 100 280 105 96 208 98 112 108 223 110 124 128 234 120 130 142 254 140 142 164 270 156 153 190 285 172 163 218 298 186 168 244 310 198 180 282 320 210 335 224 345 238 355 250 365 266 380 290 The curves 1, 2 and 3 appear to be parabolas and the mathematical expression for a parabolic curve being X2=CY, where X is a variable related to the X axis, C is a constant and Y is a value related to t