PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-19:12:40
G07     346.7          62.3               12.5 +/-    0.59      13.9 +/-    0.59  0.040 / 0.040
G08     91.9           51.7               13.7 +/-    0.81      16.9 +/-    0.81  0.050 / 0.050
G09     189.8          71.7               14.3 +/-    1.00      15.0 +/-    1.00  0.030 / 0.030
G11     142.7          15.9               15.3 +/-    2.25      37.2 +/-    2.25  0.030 / 0.030
G23     156.8          39.9               14.5 +/-    0.75      21.1 +/-    0.75  0.080 / 0.080
G27     54.3           31.8               10.5 +/-    0.92      17.7 +/-    0.92  0.090 / 0.080
G28     238.1          27.9               15.1 +/-    1.39      27.5 +/-    1.39  0.110 / 0.180
G30     304.4          37.6               11.7 +/-    1.19      17.7 +/-    1.19  0.110 / 0.170