PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-15:58:10
G03     224.0          66.9                9.7 +/-    0.91      10.4 +/-    0.91  0.130 / 0.260
G07     249.8          12.5                8.3 +/-    3.59      21.9 +/-    3.59  0.180 / 0.360
G09     303.9          18.5                7.2 +/-    1.90      16.5 +/-    1.90  0.120 / 0.120
G14     101.0          12.6                8.0 +/-    3.52      21.2 +/-    3.52  0.130 / 0.150
G16     134.2          58.4               10.2 +/-    1.09      11.7 +/-    1.09  0.150 / 0.330
G22     189.7          50.9               11.1 +/-    1.13      13.9 +/-    1.13  0.130 / 0.350
G23     319.8          49.6                8.3 +/-    0.57      10.5 +/-    0.57  0.040 / 0.040
G26     71.6           53.7                8.0 +/-    0.79       9.6 +/-    0.79  0.050 / 0.040
G31     52.6           19.9                7.1 +/-    2.77      15.6 +/-    2.77  0.040 / 0.050