PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/25-19:27:30
G07     9.4            66.4               12.7 +/-    0.78      13.7 +/-    0.78  0.040 / 0.040
G08     73.8           50.6               13.8 +/-    1.06      17.3 +/-    1.06  0.030 / 0.040
G09     182.7          60.0               16.0 +/-    0.67      18.2 +/-    0.67  0.140 / 0.090
G11     135.3          22.9               16.0 +/-    1.40      32.9 +/-    1.40  0.130 / 0.120
G23     159.3          28.8               15.6 +/-    1.47      28.0 +/-    1.47  0.040 / 0.040
G27     45.9           25.1               12.1 +/-    2.00      23.6 +/-    2.00  0.060 / 0.040
G28     247.3          36.0               16.8 +/-    1.58      26.2 +/-    1.58  0.240 / 0.080
G30     313.3          45.1               12.7 +/-    1.07      17.1 +/-    1.07  0.120 / 0.180