PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-16:42:30
G07     333.5          58.1               12.9 +/-    0.63      14.8 +/-    0.63  0.030 / 0.040
G08     101.8          52.7               13.6 +/-    0.51      16.7 +/-    0.51  0.030 / 0.040
G09     190.8          72.9               14.1 +/-    0.80      14.7 +/-    0.80  0.080 / 0.100
G11     146.1          13.5               14.9 +/-    2.01      38.4 +/-    2.01  0.070 / 0.080
G23     154.3          36.1               13.9 +/-    0.84      21.6 +/-    0.84  0.030 / 0.050
G27     53.9           31.0               12.3 +/-    2.58      21.1 +/-    2.58  0.030 / 0.040
G28     238.2          30.5               12.8 +/-    1.10      22.2 +/-    1.10  0.120 / 0.160
G30     303.3          36.5               12.1 +/-    1.81      18.8 +/-    1.81  0.090 / 0.130