Period	FTE
Feb-14	127
Mar-14	140
Apr-14	154
May-14	161
Jun-14	178
Jul-14	196
Aug-14	181
Sep-14	167
Oct-14	161
Nov-14	159
Dec-14	147
Jan-15	136
Feb-15	126
Mar-15	116
Apr-15	126
May-15	124
Jun-15	134
Jul-15	145
Aug-15	137
Sep-15	148
Oct-15	160
Nov-15	173
Dec-15	187
Jan-16	202
Feb-16	219
Mar-16	237
Apr-16	256
May-16	244
Jun-16	232
Jul-16	221
Aug-16	210
Sep-16	200
Oct-16	190
Nov-16	181
Dec-16	172
Jan-17	164
Feb-17	156
Mar-17	149
Apr-17	142
May-17	135
Jun-17	129
Jul-17	123
Aug-17	121
Sep-17	128
Oct-17	135
Nov-17	142
Dec-17	150
Jan-18	158
Feb-18	166
Mar-18	175
Apr-18	184
May-18	191
Jun-18	188
Jul-18	185
Aug-18	176
Sep-18	177
Oct-18	171
Nov-18	168
Dec-18	165
Jan-19	162
Feb-19	159
Mar-19	157
Apr-19	154
May-19	151
Jun-19	148
Jul-19	146
Aug-19	144
Sep-19	142
Oct-19	144
Nov-19	146
Dec-19	148
Jan-20	150

find a 90%, a 95%, and a 99% confidence interval for the average number of patients in March.

95% higher limit?