k3d/share/shaders/k3d_terran.sl:30:		   float ice_caps = 0.9; float depth_scale = 1;
k3d/share/shaders/k3d_terran.sl:160:      if(ice_caps > 0 && latitude > ice_caps)
k3d/share/shaders/k3d_terran2.sl:31: *    ice_caps - latitude at which ice caps tend to form on the oceans
k3d/share/shaders/k3d_terran2.sl:90:	  float ice_caps = 0.9;
k3d/share/shaders/k3d_terran2.sl:216:      if (ice_caps > 0  &&  latitude > ice_caps)
