PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-20:12:30
G07     359.7          65.0               14.3 +/-    0.55      15.6 +/-    0.55  0.040 / 0.040
G08     79.6           51.3               13.5 +/-    1.05      16.8 +/-    1.05  0.040 / 0.030
G09     183.9          63.9               14.0 +/-    1.59      15.4 +/-    1.59  0.030 / 0.030
G11     137.9          20.4               15.7 +/-    2.03      34.3 +/-    2.03  0.030 / 0.030
G23     158.7          33.0               14.0 +/-    1.74      23.2 +/-    1.74  0.090 / 0.130
G27     48.6           27.8               10.1 +/-    2.22      18.6 +/-    2.22  0.070 / 0.180
G28     243.9          33.4               13.9 +/-    2.26      22.8 +/-    2.26  0.100 / 0.130
G30     309.9          42.0               13.2 +/-    1.21      18.6 +/-    1.21  0.090 / 0.140