This formula works for 2 months. If you want you can add the 10 other months within the OR statement:
=IF(OR(COUNTIFS('Month 1'!$B$3:$B$5,Tracking!$B3,'Month 1'!$C$3:$C$5,Tracking!C$2,'Month 1'!$D$3:$D$5,"Ontime"),COUNTIFS('Month 1'!$B$3:$B$5,Tracking!$B3,'Month 1'!$C$3:$C$5,Tracking!C$2,'Month 1'!$D$3:$D$5,"Early"),COUNTIFS('Month 1'!$B$3:$B$5,Tracking!$B3,'Month 1'!$C$3:$C$5,Tracking!C$2,'Month 1'!$D$3:$D$5,"Late"),COUNTIFS('Month 2'!$B$3:$B$5,Tracking!$B3,'Month 2'!$C$3:$C$5,Tracking!C$2,'Month 2'!$D$3:$D$5,"Ontime"),COUNTIFS('Month 2'!$B$3:$B$5,Tracking!$B3,'Month 2'!$C$3:$C$5,Tracking!C$2,'Month 2'!$D$3:$D$5,"Early"),COUNTIFS('Month 2'!$B$3:$B$5,Tracking!$B3,'Month 2'!$C$3:$C$5,Tracking!C$2,'Month 2'!$D$3:$D$5,"Late")),1,"")