PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-19:28:00
G07     1.8            66.0               14.0 +/-    0.82      15.2 +/-    0.82  0.040 / 0.040
G08     76.3           53.6               15.4 +/-    0.56      18.7 +/-    0.56  0.030 / 0.040
G09     181.9          56.2               16.3 +/-    0.39      19.2 +/-    0.39  0.110 / 0.200
G11     136.2          23.4               18.4 +/-    3.27      37.4 +/-    3.27  0.140 / 0.200
G23     158.1          21.1               16.6 +/-    1.71      35.6 +/-    1.71  0.060 / 0.040
G27     42.7           20.6               12.7 +/-    2.13      27.5 +/-    2.13  0.060 / 0.050
G28     253.2          42.4               17.3 +/-    1.96      24.3 +/-    1.96  0.030 / 0.030
G30     317.4          48.4               13.4 +/-    0.58      17.2 +/-    0.58  0.040 / 0.040