PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-19:28:00
G07     18.9           67.4               12.4 +/-    0.65      13.3 +/-    0.65  0.030 / 0.040
G08     68.2           49.2               12.3 +/-    0.70      15.7 +/-    0.70  0.030 / 0.030
G09     181.5          55.8               15.1 +/-    0.55      17.8 +/-    0.55  0.100 / 0.200
G11     132.4          25.4               14.3 +/-    2.61      27.8 +/-    2.61  0.100 / 0.250
G23     159.9          24.9               14.3 +/-    2.18      28.0 +/-    2.18  0.060 / 0.110
G27     43.6           22.4                9.5 +/-    2.04      19.8 +/-    2.04  0.070 / 0.090
G28     251.0          38.7               13.7 +/-    1.01      20.4 +/-    1.01  0.040 / 0.040
G30     316.6          47.9               11.7 +/-    0.72      15.1 +/-    0.72  0.040 / 0.030